Is -7+9=-9+7 true, false or open

True

The equation -7 + 9 = -9 + 7 is true.

To determine whether the equation -7 + 9 = -9 + 7 is true, false, or open, we need to simplify both sides of the equation and then compare the results.

Starting with the left side: -7 + 9 = 2.

Next, let's simplify the right side: -9 + 7 = -2.

So, the equation can be rewritten as 2 = -2.

Since 2 does not equal -2, the equation -7 + 9 = -9 + 7 is false.

Therefore, the answer to the question is: false.