Question

1. Is -7+9=-9+7 true, false, or open? (1 point)

Answer 1

1. Is false

It is false because -7+9 equal 2 and -9+7 equal -2

Answer 2

Problem 1

-7+9 is the same as 9+(-7) or 9-7. All of which simplify to 2.

On the other hand, -9+7 is the same as 7+(-9) or 7-9, which simplifies to -2.

Therefore the equation -7+9 = -9+7 becomes 2 = -2, and we can see this is a false equation.

Answer: false

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Problem 2

Your second question has some weird typo errors going on. Please update.