c+(3c-6)=42

Solution for c+(3c-6)=42 equation:

Simplifying
c + (3c + -6) = 42

Reorder the terms:
c + (-6 + 3c) = 42

Remove parenthesis around (-6 + 3c)
c + -6 + 3c = 42

Reorder the terms:
-6 + c + 3c = 42

Combine like terms: c + 3c = 4c
-6 + 4c = 42

Solving
-6 + 4c = 42

Solving for variable 'c'.

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

Add '6' to each side of the equation.
-6 + 6 + 4c = 42 + 6

Combine like terms: -6 + 6 = 0
0 + 4c = 42 + 6
4c = 42 + 6

Combine like terms: 42 + 6 = 48
4c = 48

Divide each side by '4'.
c = 12

Simplifying
c = 12