3x+40=x+80

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Solution for 3x+40=x+80 equation:


Simplifying
3x + 40 = x + 80

Reorder the terms:
40 + 3x = x + 80

Reorder the terms:
40 + 3x = 80 + x

Solving
40 + 3x = 80 + 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 = 80 + x + -1x

Combine like terms: 3x + -1x = 2x
40 + 2x = 80 + x + -1x

Combine like terms: x + -1x = 0
40 + 2x = 80 + 0
40 + 2x = 80

Add '-40' to each side of the equation.
40 + -40 + 2x = 80 + -40

Combine like terms: 40 + -40 = 0
0 + 2x = 80 + -40
2x = 80 + -40

Combine like terms: 80 + -40 = 40
2x = 40

Divide each side by '2'.
x = 20

Simplifying
x = 20

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