3x-120=90

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Solution for 3x-120=90 equation: 


Simplifying
3x + -120 = 90

Reorder the terms:
-120 + 3x = 90

Solving
-120 + 3x = 90

Solving for variable 'x'.

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

Add '120' to each side of the equation.
-120 + 120 + 3x = 90 + 120

Combine like terms: -120 + 120 = 0
0 + 3x = 90 + 120
3x = 90 + 120

Combine like terms: 90 + 120 = 210
3x = 210

Divide each side by '3'.
x = 70

Simplifying
x = 70

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