3x-40=x+20

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Solution for 3x-40=x+20 equation:


Simplifying
3x + -40 = x + 20

Reorder the terms:
-40 + 3x = x + 20

Reorder the terms:
-40 + 3x = 20 + x

Solving
-40 + 3x = 20 + 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.
-40 + 3x + -1x = 20 + x + -1x

Combine like terms: 3x + -1x = 2x
-40 + 2x = 20 + x + -1x

Combine like terms: x + -1x = 0
-40 + 2x = 20 + 0
-40 + 2x = 20

Add '40' to each side of the equation.
-40 + 40 + 2x = 20 + 40

Combine like terms: -40 + 40 = 0
0 + 2x = 20 + 40
2x = 20 + 40

Combine like terms: 20 + 40 = 60
2x = 60

Divide each side by '2'.
x = 30

Simplifying
x = 30

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