90+7x=139

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Solution for 90+7x=139 equation: 


Simplifying
90 + 7x = 139

Solving
90 + 7x = 139

Solving for variable 'x'.

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

Add '-90' to each side of the equation.
90 + -90 + 7x = 139 + -90

Combine like terms: 90 + -90 = 0
0 + 7x = 139 + -90
7x = 139 + -90

Combine like terms: 139 + -90 = 49
7x = 49

Divide each side by '7'.
x = 7

Simplifying
x = 7

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