5g+9=2g+21

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Solution for 5g+9=2g+21 equation:


Simplifying
5g + 9 = 2g + 21

Reorder the terms:
9 + 5g = 2g + 21

Reorder the terms:
9 + 5g = 21 + 2g

Solving
9 + 5g = 21 + 2g

Solving for variable 'g'.

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

Add '-2g' to each side of the equation.
9 + 5g + -2g = 21 + 2g + -2g

Combine like terms: 5g + -2g = 3g
9 + 3g = 21 + 2g + -2g

Combine like terms: 2g + -2g = 0
9 + 3g = 21 + 0
9 + 3g = 21

Add '-9' to each side of the equation.
9 + -9 + 3g = 21 + -9

Combine like terms: 9 + -9 = 0
0 + 3g = 21 + -9
3g = 21 + -9

Combine like terms: 21 + -9 = 12
3g = 12

Divide each side by '3'.
g = 4

Simplifying
g = 4

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