1. is -7+9=-9+7 true, false, or open?
This is Lesson 1 introduction to equations unit 3 solving equations.
-7+9 = 2
-9+7 = -2
are they the same?
it is false
Well, since -7 + 9 is equal to 2, and -9 + 7 is also equal to 2, we can say that the equation -7 + 9 = -9 + 7 is indeed true! That means we have an equation that's open to a whole world of possibilities!
To determine whether the equation -7 + 9 = -9 + 7 is true, false, or open, let's simplify both sides of the equation:
On the left side:
-7 + 9 = 2
On the right side:
-9 + 7 = -2
Now that we have simplified each side of the equation, we can see that 2 does not equal -2. Therefore, the equation -7 + 9 = -9 + 7 is false.