7c-8+3(2c)=31

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Solution for 7c-8+3(2c)=31 equation:


Simplifying
7c + -8 + 3(2c) = 31

Remove parenthesis around (2c)
7c + -8 + 3 * 2c = 31

Multiply 3 * 2
7c + -8 + 6c = 31

Reorder the terms:
-8 + 7c + 6c = 31

Combine like terms: 7c + 6c = 13c
-8 + 13c = 31

Solving
-8 + 13c = 31

Solving for variable 'c'.

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

Add '8' to each side of the equation.
-8 + 8 + 13c = 31 + 8

Combine like terms: -8 + 8 = 0
0 + 13c = 31 + 8
13c = 31 + 8

Combine like terms: 31 + 8 = 39
13c = 39

Divide each side by '13'.
c = 3

Simplifying
c = 3

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