3g-21=20+g

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Solution for 3g-21=20+g equation:


Simplifying
3g + -21 = 20 + g

Reorder the terms:
-21 + 3g = 20 + g

Solving
-21 + 3g = 20 + g

Solving for variable 'g'.

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

Add '-1g' to each side of the equation.
-21 + 3g + -1g = 20 + g + -1g

Combine like terms: 3g + -1g = 2g
-21 + 2g = 20 + g + -1g

Combine like terms: g + -1g = 0
-21 + 2g = 20 + 0
-21 + 2g = 20

Add '21' to each side of the equation.
-21 + 21 + 2g = 20 + 21

Combine like terms: -21 + 21 = 0
0 + 2g = 20 + 21
2g = 20 + 21

Combine like terms: 20 + 21 = 41
2g = 41

Divide each side by '2'.
g = 20.5

Simplifying
g = 20.5

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