3x + 8 + 4x = - 8 (x - 6) - 8 (13x + 5)

3x+8+4x=-8 (x-6) - 8 (13x+5)

Get rid of parenthesis.

3x+8+4x=-8 (x-6) - 8 (13x+5)

3x+8+4x=-8x+48-104x-40

Comine like terms.

7x+8=-112x+8

Add 112x on both sides and subtract 8 from both sides.

119x=0.

Now since you cannot solve, or will get a 0, the answer is x=0.

3x+8+4x=-8x+48-104x-40

7x+8=-112x+8

-7x - 7x

8=-119x+8

-8 - 8

0=-119x

0=x