30-3x=90

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Solution for 30-3x=90 equation: 


Simplifying
30 + -3x = 90

Solving
30 + -3x = 90

Solving for variable 'x'.

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

Add '-30' to each side of the equation.
30 + -30 + -3x = 90 + -30

Combine like terms: 30 + -30 = 0
0 + -3x = 90 + -30
-3x = 90 + -30

Combine like terms: 90 + -30 = 60
-3x = 60

Divide each side by '-3'.
x = -20

Simplifying
x = -20

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