42=c+(2c-3)

Solution for 42=c+(2c-3) equation:

Simplifying
42 = c + (2c + -3)

Reorder the terms:
42 = c + (-3 + 2c)

Remove parenthesis around (-3 + 2c)
42 = c + -3 + 2c

Reorder the terms:
42 = -3 + c + 2c

Combine like terms: c + 2c = 3c
42 = -3 + 3c

Solving
42 = -3 + 3c

Solving for variable 'c'.

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

Add '-3c' to each side of the equation.
42 + -3c = -3 + 3c + -3c

Combine like terms: 3c + -3c = 0
42 + -3c = -3 + 0
42 + -3c = -3

Add '-42' to each side of the equation.
42 + -42 + -3c = -3 + -42

Combine like terms: 42 + -42 = 0
0 + -3c = -3 + -42
-3c = -3 + -42

Combine like terms: -3 + -42 = -45
-3c = -45

Divide each side by '-3'.
c = 15

Simplifying
c = 15