3x-20=x-4

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


Simplifying
3x + -20 = x + -4

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

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

Solving
-20 + 3x = -4 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
-20 + 3x + -1x = -4 + x + -1x

Combine like terms: 3x + -1x = 2x
-20 + 2x = -4 + x + -1x

Combine like terms: x + -1x = 0
-20 + 2x = -4 + 0
-20 + 2x = -4

Add '20' to each side of the equation.
-20 + 20 + 2x = -4 + 20

Combine like terms: -20 + 20 = 0
0 + 2x = -4 + 20
2x = -4 + 20

Combine like terms: -4 + 20 = 16
2x = 16

Divide each side by '2'.
x = 8

Simplifying
x = 8

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