4 (5 + 2x) - 5 = 3 (3x + 7)

x = - 1

Step-by-step explanation:

The first step is get rid of the numbers outside this (). So we will get

20+8x=9x+21 (multiplication) And we can get rid of one side of x by subtract 8x on both sides, an then we will get 20 = x+21

And we can move the numbers to one side by subtract 21 on each side, and we will get - 1=x

And rewrite it:

x = - 1

That's the answer.