-4c+6-2c-12=42

Solution for -4c+6-2c-12=42 equation:

Simplifying
-4c + 6 + -2c + -12 = 42

Reorder the terms:
6 + -12 + -4c + -2c = 42

Combine like terms: 6 + -12 = -6
-6 + -4c + -2c = 42

Combine like terms: -4c + -2c = -6c
-6 + -6c = 42

Solving
-6 + -6c = 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 + -6c = 42 + 6

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

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

Divide each side by '-6'.
c = -8

Simplifying
c = -8