20-7x=-57

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Solution for 20-7x=-57 equation: 


Simplifying
20 + -7x = -57

Solving
20 + -7x = -57

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 + -7x = -57 + -20

Combine like terms: 20 + -20 = 0
0 + -7x = -57 + -20
-7x = -57 + -20

Combine like terms: -57 + -20 = -77
-7x = -77

Divide each side by '-7'.
x = 11

Simplifying
x = 11

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