Mathematics: Is -7 + 9 equals -9 + 7 true false or open

Is -7 + 9 equals -9 + 7 true false or open

juliajaelyn9658

27.05.2020

False because the answer to the problems are different. One is positive and one is negative.

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melissapulido198

27.05.2020

Hi!

The simplest way to find out if they're equal is by solving each of them. Imagine a number line. -7 + 9

-7 moves to the right 9 times, and lands on 2.

-9 + 7

-9 moves to the right 7 times, and lands on -2.

So, does -7 + 9 = -9 + 7?

Or we could say, does 2 = -2?

The answer is no. This is false.

Hope this helps! :)

-Peredhel

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ctyrector

09.02.2023

270 dollars because 1440 divided by 12 equals 120. 120 times 2.25

is $270.000

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