81-g=42

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Solution for 81-g=42 equation: 


Simplifying
81 + -1g = 42

Solving
81 + -1g = 42

Solving for variable 'g'.

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

Add '-81' to each side of the equation.
81 + -81 + -1g = 42 + -81

Combine like terms: 81 + -81 = 0
0 + -1g = 42 + -81
-1g = 42 + -81

Combine like terms: 42 + -81 = -39
-1g = -39

Divide each side by '-1'.
g = 39

Simplifying
g = 39

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