3G-4=21

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Solution for 3G-4=21 equation: 


Simplifying
3G + -4 = 21

Reorder the terms:
-4 + 3G = 21

Solving
-4 + 3G = 21

Solving for variable 'G'.

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

Add '4' to each side of the equation.
-4 + 4 + 3G = 21 + 4

Combine like terms: -4 + 4 = 0
0 + 3G = 21 + 4
3G = 21 + 4

Combine like terms: 21 + 4 = 25
3G = 25

Divide each side by '3'.
G = 8.333333333

Simplifying
G = 8.333333333

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