3(x-12)+4x=90

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Solution for 3(x-12)+4x=90 equation:


Simplifying
3(x + -12) + 4x = 90

Reorder the terms:
3(-12 + x) + 4x = 90
(-12 * 3 + x * 3) + 4x = 90
(-36 + 3x) + 4x = 90

Combine like terms: 3x + 4x = 7x
-36 + 7x = 90

Solving
-36 + 7x = 90

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 + 7x = 90 + 36

Combine like terms: -36 + 36 = 0
0 + 7x = 90 + 36
7x = 90 + 36

Combine like terms: 90 + 36 = 126
7x = 126

Divide each side by '7'.
x = 18

Simplifying
x = 18

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