3x-39=90

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Solution for 3x-39=90 equation: 


Simplifying
3x + -39 = 90

Reorder the terms:
-39 + 3x = 90

Solving
-39 + 3x = 90

Solving for variable 'x'.

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

Add '39' to each side of the equation.
-39 + 39 + 3x = 90 + 39

Combine like terms: -39 + 39 = 0
0 + 3x = 90 + 39
3x = 90 + 39

Combine like terms: 90 + 39 = 129
3x = 129

Divide each side by '3'.
x = 43

Simplifying
x = 43

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