9g-15=21

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Solution for 9g-15=21 equation: 


Simplifying
9g + -15 = 21

Reorder the terms:
-15 + 9g = 21

Solving
-15 + 9g = 21

Solving for variable 'g'.

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

Add '15' to each side of the equation.
-15 + 15 + 9g = 21 + 15

Combine like terms: -15 + 15 = 0
0 + 9g = 21 + 15
9g = 21 + 15

Combine like terms: 21 + 15 = 36
9g = 36

Divide each side by '9'.
g = 4

Simplifying
g = 4

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