7x-57=90

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Solution for 7x-57=90 equation: 


Simplifying
7x + -57 = 90

Reorder the terms:
-57 + 7x = 90

Solving
-57 + 7x = 90

Solving for variable 'x'.

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

Add '57' to each side of the equation.
-57 + 57 + 7x = 90 + 57

Combine like terms: -57 + 57 = 0
0 + 7x = 90 + 57
7x = 90 + 57

Combine like terms: 90 + 57 = 147
7x = 147

Divide each side by '7'.
x = 21

Simplifying
x = 21

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