3x-4(4x+9)=120

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Solution for 3x-4(4x+9)=120 equation:


Simplifying
3x + -4(4x + 9) = 120

Reorder the terms:
3x + -4(9 + 4x) = 120
3x + (9 * -4 + 4x * -4) = 120
3x + (-36 + -16x) = 120

Reorder the terms:
-36 + 3x + -16x = 120

Combine like terms: 3x + -16x = -13x
-36 + -13x = 120

Solving
-36 + -13x = 120

Solving for variable 'x'.

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

Add '36' to each side of the equation.
-36 + 36 + -13x = 120 + 36

Combine like terms: -36 + 36 = 0
0 + -13x = 120 + 36
-13x = 120 + 36

Combine like terms: 120 + 36 = 156
-13x = 156

Divide each side by '-13'.
x = -12

Simplifying
x = -12

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