2x+30=4x-12

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Solution for 2x+30=4x-12 equation: 


Simplifying
2x + 30 = 4x + -12

Reorder the terms:
30 + 2x = 4x + -12

Reorder the terms:
30 + 2x = -12 + 4x

Solving
30 + 2x = -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.
30 + 2x + -4x = -12 + 4x + -4x

Combine like terms: 2x + -4x = -2x
30 + -2x = -12 + 4x + -4x

Combine like terms: 4x + -4x = 0
30 + -2x = -12 + 0
30 + -2x = -12

Add '-30' to each side of the equation.
30 + -30 + -2x = -12 + -30

Combine like terms: 30 + -30 = 0
0 + -2x = -12 + -30
-2x = -12 + -30

Combine like terms: -12 + -30 = -42
-2x = -42

Divide each side by '-2'.
x = 21

Simplifying
x = 21

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