Does a Negative and a Negative Equal a Positive

They are trying to learn rules for operations with positive and negative numbers. Lets think about a multiplication equation as a person walking right or left on a number line.

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It Will Not Equal a Positive it will Equal a Negative.

. To find the sum of a positive and a negative integer take the absolute value of each integer and then subtract these values. When you multiply two negative numbers or two positive numbers then the product is always positive. We could have done it all with algebra but I personally prefer seeing a numerical example.

To find the sum of a positive and a negative integer take the absolute value of each integer and then subtract these values. Adding two positive integers always yields a positive sum. If -1 x -1 -1 then 3 -1 4 or put another way 2 4 which we know to be incorrect.

Yes indeed two negatives make a positive and we will explain why with examples. When you multiply a negative number by a positive number then the product is always negative. We know that negative times anything means that it will change the sign.

If you have -33 then there is only one minus sign and the answer is negative. When a number has no sign it usually means that it is positive. The product of two fortunes two ve is one fortune ve.

Now lets have a negative number. In this regard why does a negative plus a negative. Depends what you mean by and.

Ideally the second negative should change the sign of our original number which is. Multiplying by a negative is a reflection so multiplying a negative by a negative is in effect the reflection of a reflection which would be the original back again. In math class we were learning about negatives multiplying and dividing them and my teacher wanted to know Why does a negative times a negative equal a positive.

Adding two positive integers always yields a positive sum. We multiply it with another negative number. I teach a group of very low-level math students.

Instead we can work. If a negative times a negative equals a positive why does a negative squared equal a negative. I hope thats helped a little with understanding why a negative multiplied by a negative is a positive.

If you multiply a positive number by a negative it always equals a negative number. The sum of any integer and its opposite is equal to zero. Using the number line is a good way to visualize it but it doesnt constitute a legitimate proof.

Because youre adding a minus. Secondly why does a negative plus. Brahmagupta was an Indian Mathematician and an astronomer.

When you divide a negative number by a positive number then the quotient is negative. Negative plus Negative would equal positive in Maths. He used the ideas of Fortune positive and Debts negative for positive and negative.

Like this-7 -8 1. Well prove 2 3 6. The product of two debts two -ve is one.

As multiplying with negative will change the sign a negative times a negative equal a positive Explanation. For example -3 - 9 27. Is the positive sign is the negative sign.

The sum of any integer and its opposite is equal to zero. He was one of the first and greatest mathematicians of his era 598 CE- 668 CE. To the above resourceWell I know that even negatives do.

If you have -3-3 then there are two minus signs being multiplied and the answer is positive. Lets talk about signs. There are a couple of ways of thinking about this.

Yeah thats a great reply indeed with the suggestions. Once we agree that 2 3 6 via repeated addition and 3 2 6 via a belief in commutativity that negative times negative is positive is a forced logical consequence of these next two basic beliefs of arithmetic. Does a negative divided by a negative equal a positive.

Adding two negative integers always yields a negative sum. I can come up with lots of cutsie ways to show addition and subtraction with - numbers but cannot come up with anything meaningful or cute to explain why negative x negative positive and same for division. Logically its the only answer that makes sense.

A 0 0 and a b c a b a c. Adding two negative integers always yields a negative sum. 3 times 4 equals 12.

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