3x+7(x+6)=

Solution for 3x+7(x+6)= equation:

Simplifying
3x + 7(x + 6) = 0

Reorder the terms:
3x + 7(6 + x) = 0
3x + (6 * 7 + x * 7) = 0
3x + (42 + 7x) = 0

Reorder the terms:
42 + 3x + 7x = 0

Combine like terms: 3x + 7x = 10x
42 + 10x = 0

Solving
42 + 10x = 0

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-42' to each side of the equation.
42 + -42 + 10x = 0 + -42

Combine like terms: 42 + -42 = 0
0 + 10x = 0 + -42
10x = 0 + -42

Combine like terms: 0 + -42 = -42
10x = -42

Divide each side by '10'.
x = -4.2

Simplifying
x = -4.2