3x-40=80

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Solution for 3x-40=80 equation: 


Simplifying
3x + -40 = 80

Reorder the terms:
-40 + 3x = 80

Solving
-40 + 3x = 80

Solving for variable 'x'.

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

Add '40' to each side of the equation.
-40 + 40 + 3x = 80 + 40

Combine like terms: -40 + 40 = 0
0 + 3x = 80 + 40
3x = 80 + 40

Combine like terms: 80 + 40 = 120
3x = 120

Divide each side by '3'.
x = 40

Simplifying
x = 40

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