80-x=21

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Solution for 80-x=21 equation: 


Simplifying
80 + -1x = 21

Solving
80 + -1x = 21

Solving for variable 'x'.

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

Add '-80' to each side of the equation.
80 + -80 + -1x = 21 + -80

Combine like terms: 80 + -80 = 0
0 + -1x = 21 + -80
-1x = 21 + -80

Combine like terms: 21 + -80 = -59
-1x = -59

Divide each side by '-1'.
x = 59

Simplifying
x = 59

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