3(x-6) +(4x + 12) - 6x =
3x - 9+ 4x + 12-6x =
(3x + 4x - 6x)+(-9+12) =
x+3

Only  .

Step-by-step explanation:

Given equation:

We have to prove the equations are equal or not.

So, considering first two equations

Solving R.H.S and L.H.S and taking terms of x on one side and constants on the other side.

On changing the side, the sign also changes.

                           L.H.S= 0, R.H.S= -9

Taking the next two equation

So, for the given equations only two equations  are equal i.e

yo answer should be 6 if im not mistaken

step-by-step explanation:

answer: the two figures are congruent.

step-by-step explanation: they're congruent because figure efgh is reflected across the x and y axis but it was also rotated.

hope it !