3x-20=100

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Solution for 3x-20=100 equation: 


Simplifying
3x + -20 = 100

Reorder the terms:
-20 + 3x = 100

Solving
-20 + 3x = 100

Solving for variable 'x'.

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

Add '20' to each side of the equation.
-20 + 20 + 3x = 100 + 20

Combine like terms: -20 + 20 = 0
0 + 3x = 100 + 20
3x = 100 + 20

Combine like terms: 100 + 20 = 120
3x = 120

Divide each side by '3'.
x = 40

Simplifying
x = 40

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