9x-(4x-12)=3*(7+x)+7

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Solution for 9x-(4x-12)=3*(7+x)+7 equation:


Simplifying
9x + -1(4x + -12) = 3(7 + x) + 7

Reorder the terms:
9x + -1(-12 + 4x) = 3(7 + x) + 7
9x + (-12 * -1 + 4x * -1) = 3(7 + x) + 7
9x + (12 + -4x) = 3(7 + x) + 7

Reorder the terms:
12 + 9x + -4x = 3(7 + x) + 7

Combine like terms: 9x + -4x = 5x
12 + 5x = 3(7 + x) + 7
12 + 5x = (7 * 3 + x * 3) + 7
12 + 5x = (21 + 3x) + 7

Reorder the terms:
12 + 5x = 21 + 7 + 3x

Combine like terms: 21 + 7 = 28
12 + 5x = 28 + 3x

Solving
12 + 5x = 28 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
12 + 5x + -3x = 28 + 3x + -3x

Combine like terms: 5x + -3x = 2x
12 + 2x = 28 + 3x + -3x

Combine like terms: 3x + -3x = 0
12 + 2x = 28 + 0
12 + 2x = 28

Add '-12' to each side of the equation.
12 + -12 + 2x = 28 + -12

Combine like terms: 12 + -12 = 0
0 + 2x = 28 + -12
2x = 28 + -12

Combine like terms: 28 + -12 = 16
2x = 16

Divide each side by '2'.
x = 8

Simplifying
x = 8

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