4(3)+c=3(c-1)

Solution for 4(3)+c=3(c-1) equation:

Simplifying
4(3) + c = 3(c + -1)

Multiply 4 * 3
12 + c = 3(c + -1)

Reorder the terms:
12 + c = 3(-1 + c)
12 + c = (-1 * 3 + c * 3)
12 + c = (-3 + 3c)

Solving
12 + c = -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.
12 + c + -3c = -3 + 3c + -3c

Combine like terms: c + -3c = -2c
12 + -2c = -3 + 3c + -3c

Combine like terms: 3c + -3c = 0
12 + -2c = -3 + 0
12 + -2c = -3

Add '-12' to each side of the equation.
12 + -12 + -2c = -3 + -12

Combine like terms: 12 + -12 = 0
0 + -2c = -3 + -12
-2c = -3 + -12

Combine like terms: -3 + -12 = -15
-2c = -15

Divide each side by '-2'.
c = 7.5

Simplifying
c = 7.5