3x+12-4x=20

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Solution for 3x+12-4x=20 equation:


Simplifying
3x + 12 + -4x = 20

Reorder the terms:
12 + 3x + -4x = 20

Combine like terms: 3x + -4x = -1x
12 + -1x = 20

Solving
12 + -1x = 20

Solving for variable 'x'.

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

Add '-12' to each side of the equation.
12 + -12 + -1x = 20 + -12

Combine like terms: 12 + -12 = 0
0 + -1x = 20 + -12
-1x = 20 + -12

Combine like terms: 20 + -12 = 8
-1x = 8

Divide each side by '-1'.
x = -8

Simplifying
x = -8

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