18+9c+9+5c-c=66

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Solution for 18+9c+9+5c-c=66 equation:


Simplifying
18 + 9c + 9 + 5c + -1c = 66

Reorder the terms:
18 + 9 + 9c + 5c + -1c = 66

Combine like terms: 18 + 9 = 27
27 + 9c + 5c + -1c = 66

Combine like terms: 9c + 5c = 14c
27 + 14c + -1c = 66

Combine like terms: 14c + -1c = 13c
27 + 13c = 66

Solving
27 + 13c = 66

Solving for variable 'c'.

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

Add '-27' to each side of the equation.
27 + -27 + 13c = 66 + -27

Combine like terms: 27 + -27 = 0
0 + 13c = 66 + -27
13c = 66 + -27

Combine like terms: 66 + -27 = 39
13c = 39

Divide each side by '13'.
c = 3

Simplifying
c = 3

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