99-20-x=60

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Solution for 99-20-x=60 equation: 


Simplifying
99 + -20 + -1x = 60

Combine like terms: 99 + -20 = 79
79 + -1x = 60

Solving
79 + -1x = 60

Solving for variable 'x'.

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

Add '-79' to each side of the equation.
79 + -79 + -1x = 60 + -79

Combine like terms: 79 + -79 = 0
0 + -1x = 60 + -79
-1x = 60 + -79

Combine like terms: 60 + -79 = -19
-1x = -19

Divide each side by '-1'.
x = 19

Simplifying
x = 19

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