7(3-x)2+x=-9

Solution for 7(3-x)2+x=-9 equation:

Simplifying
7(3 + -1x) * 2 + x = -9

Reorder the terms for easier multiplication:
7 * 2(3 + -1x) + x = -9

Multiply 7 * 2
14(3 + -1x) + x = -9
(3 * 14 + -1x * 14) + x = -9
(42 + -14x) + x = -9

Combine like terms: -14x + x = -13x
42 + -13x = -9

Solving
42 + -13x = -9

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 + -13x = -9 + -42

Combine like terms: 42 + -42 = 0
0 + -13x = -9 + -42
-13x = -9 + -42

Combine like terms: -9 + -42 = -51
-13x = -51

Divide each side by '-13'.
x = 3.923076923

Simplifying
x = 3.923076923