Simplify 1/4c to c/4
c/4 + 2/3 = 1/3
Subtract 2/3 from both sides
c/4 = 1/3 - 2/3
Simplify 1/3 - 2/3 to -1/3
c/4 = -1/3
Multiply both sides by 4
c = -1/3 × 4
Simplify 1/3 × 4 to 4/3
c = -4/3
