Explain why if two triangles are congruent, then they have to also be similar.

Because if 2 sides are congruent that means 2 sides are the same wich means that each that only one edge can change at a time.  I hope this helps.

Step-by-step explanation:

3( -2x + 4)

let's equal the given soln to 0

3(-2x+4) = 0

-6x + 12 = 0

-6x + 12 - 12 = 0-12

-6x = -12

we divide both sides by -6

-6x/-6 = -12/-6

x = 2

Step-by-step explanation:

hope that will help you.