3x+18=4x-12

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Solution for 3x+18=4x-12 equation:


Simplifying
3x + 18 = 4x + -12

Reorder the terms:
18 + 3x = 4x + -12

Reorder the terms:
18 + 3x = -12 + 4x

Solving
18 + 3x = -12 + 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.
18 + 3x + -4x = -12 + 4x + -4x

Combine like terms: 3x + -4x = -1x
18 + -1x = -12 + 4x + -4x

Combine like terms: 4x + -4x = 0
18 + -1x = -12 + 0
18 + -1x = -12

Add '-18' to each side of the equation.
18 + -18 + -1x = -12 + -18

Combine like terms: 18 + -18 = 0
0 + -1x = -12 + -18
-1x = -12 + -18

Combine like terms: -12 + -18 = -30
-1x = -30

Divide each side by '-1'.
x = 30

Simplifying
x = 30

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