-9c+3=21

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Solution for -9c+3=21 equation: 


Simplifying
-9c + 3 = 21

Reorder the terms:
3 + -9c = 21

Solving
3 + -9c = 21

Solving for variable 'c'.

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

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

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

Combine like terms: 21 + -3 = 18
-9c = 18

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

Simplifying
c = -2

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