7(4x-1)-3(5x-7)=12x+9

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Solution for 7(4x-1)-3(5x-7)=12x+9 equation:


Simplifying
7(4x + -1) + -3(5x + -7) = 12x + 9

Reorder the terms:
7(-1 + 4x) + -3(5x + -7) = 12x + 9
(-1 * 7 + 4x * 7) + -3(5x + -7) = 12x + 9
(-7 + 28x) + -3(5x + -7) = 12x + 9

Reorder the terms:
-7 + 28x + -3(-7 + 5x) = 12x + 9
-7 + 28x + (-7 * -3 + 5x * -3) = 12x + 9
-7 + 28x + (21 + -15x) = 12x + 9

Reorder the terms:
-7 + 21 + 28x + -15x = 12x + 9

Combine like terms: -7 + 21 = 14
14 + 28x + -15x = 12x + 9

Combine like terms: 28x + -15x = 13x
14 + 13x = 12x + 9

Reorder the terms:
14 + 13x = 9 + 12x

Solving
14 + 13x = 9 + 12x

Solving for variable 'x'.

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

Add '-12x' to each side of the equation.
14 + 13x + -12x = 9 + 12x + -12x

Combine like terms: 13x + -12x = 1x
14 + 1x = 9 + 12x + -12x

Combine like terms: 12x + -12x = 0
14 + 1x = 9 + 0
14 + 1x = 9

Add '-14' to each side of the equation.
14 + -14 + 1x = 9 + -14

Combine like terms: 14 + -14 = 0
0 + 1x = 9 + -14
1x = 9 + -14

Combine like terms: 9 + -14 = -5
1x = -5

Divide each side by '1'.
x = -5

Simplifying
x = -5

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