x-20=57

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Solution for x-20=57 equation: 


Simplifying
x + -20 = 57

Reorder the terms:
-20 + x = 57

Solving
-20 + x = 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 + x = 57 + 20

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

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

Simplifying
x = 77

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