3c+6c-9=18

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Solution for 3c+6c-9=18 equation: 


Simplifying
3c + 6c + -9 = 18

Reorder the terms:
-9 + 3c + 6c = 18

Combine like terms: 3c + 6c = 9c
-9 + 9c = 18

Solving
-9 + 9c = 18

Solving for variable 'c'.

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

Add '9' to each side of the equation.
-9 + 9 + 9c = 18 + 9

Combine like terms: -9 + 9 = 0
0 + 9c = 18 + 9
9c = 18 + 9

Combine like terms: 18 + 9 = 27
9c = 27

Divide each side by '9'.
c = 3

Simplifying
c = 3

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