18-(g+2)=21

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Solution for 18-(g+2)=21 equation:


Simplifying
18 + -1(g + 2) = 21

Reorder the terms:
18 + -1(2 + g) = 21
18 + (2 * -1 + g * -1) = 21
18 + (-2 + -1g) = 21

Combine like terms: 18 + -2 = 16
16 + -1g = 21

Solving
16 + -1g = 21

Solving for variable 'g'.

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

Add '-16' to each side of the equation.
16 + -16 + -1g = 21 + -16

Combine like terms: 16 + -16 = 0
0 + -1g = 21 + -16
-1g = 21 + -16

Combine like terms: 21 + -16 = 5
-1g = 5

Divide each side by '-1'.
g = -5

Simplifying
g = -5

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