3+(x+3)+8x=7

Solution for 3+(x+3)+8x=7 equation:

Simplifying
3 + (x + 3) + 8x = 7

Reorder the terms:
3 + (3 + x) + 8x = 7

Remove parenthesis around (3 + x)
3 + 3 + x + 8x = 7

Combine like terms: 3 + 3 = 6
6 + x + 8x = 7

Combine like terms: x + 8x = 9x
6 + 9x = 7

Solving
6 + 9x = 7

Solving for variable 'x'.

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

Add '-6' to each side of the equation.
6 + -6 + 9x = 7 + -6

Combine like terms: 6 + -6 = 0
0 + 9x = 7 + -6
9x = 7 + -6

Combine like terms: 7 + -6 = 1
9x = 1

Divide each side by '9'.
x = 0.1111111111

Simplifying
x = 0.1111111111