3(x-4)+12(x-9)=4x+13

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Solution for 3(x-4)+12(x-9)=4x+13 equation:


Simplifying
3(x + -4) + 12(x + -9) = 4x + 13

Reorder the terms:
3(-4 + x) + 12(x + -9) = 4x + 13
(-4 * 3 + x * 3) + 12(x + -9) = 4x + 13
(-12 + 3x) + 12(x + -9) = 4x + 13

Reorder the terms:
-12 + 3x + 12(-9 + x) = 4x + 13
-12 + 3x + (-9 * 12 + x * 12) = 4x + 13
-12 + 3x + (-108 + 12x) = 4x + 13

Reorder the terms:
-12 + -108 + 3x + 12x = 4x + 13

Combine like terms: -12 + -108 = -120
-120 + 3x + 12x = 4x + 13

Combine like terms: 3x + 12x = 15x
-120 + 15x = 4x + 13

Reorder the terms:
-120 + 15x = 13 + 4x

Solving
-120 + 15x = 13 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
-120 + 15x + -4x = 13 + 4x + -4x

Combine like terms: 15x + -4x = 11x
-120 + 11x = 13 + 4x + -4x

Combine like terms: 4x + -4x = 0
-120 + 11x = 13 + 0
-120 + 11x = 13

Add '120' to each side of the equation.
-120 + 120 + 11x = 13 + 120

Combine like terms: -120 + 120 = 0
0 + 11x = 13 + 120
11x = 13 + 120

Combine like terms: 13 + 120 = 133
11x = 133

Divide each side by '11'.
x = 12.09090909

Simplifying
x = 12.09090909

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