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

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


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

Reorder the terms:
7(4 + 3x) = 9x + -12 + -1x
(4 * 7 + 3x * 7) = 9x + -12 + -1x
(28 + 21x) = 9x + -12 + -1x

Reorder the terms:
28 + 21x = -12 + 9x + -1x

Combine like terms: 9x + -1x = 8x
28 + 21x = -12 + 8x

Solving
28 + 21x = -12 + 8x

Solving for variable 'x'.

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

Add '-8x' to each side of the equation.
28 + 21x + -8x = -12 + 8x + -8x

Combine like terms: 21x + -8x = 13x
28 + 13x = -12 + 8x + -8x

Combine like terms: 8x + -8x = 0
28 + 13x = -12 + 0
28 + 13x = -12

Add '-28' to each side of the equation.
28 + -28 + 13x = -12 + -28

Combine like terms: 28 + -28 = 0
0 + 13x = -12 + -28
13x = -12 + -28

Combine like terms: -12 + -28 = -40
13x = -40

Divide each side by '13'.
x = -3.076923077

Simplifying
x = -3.076923077

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