-3-2n=-21

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Solution for -3-2n=-21 equation: 


Simplifying
-3 + -2n = -21

Solving
-3 + -2n = -21

Solving for variable 'n'.

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

Add '3' to each side of the equation.
-3 + 3 + -2n = -21 + 3

Combine like terms: -3 + 3 = 0
0 + -2n = -21 + 3
-2n = -21 + 3

Combine like terms: -21 + 3 = -18
-2n = -18

Divide each side by '-2'.
n = 9

Simplifying
n = 9

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