When solving an equation with two variables, replace the variables with the values given and then solve the now variable-free equation. (Remember order of operations, PEMDAS, Parentheses, Exponents, Multiplication/Division, Addition/Subtraction.)
Solve -3c - 7c = -2c + z - 4 for c in terms of z.
| -8z + 4 | |
| -4\(\frac{1}{4}\)z + 2\(\frac{1}{4}\) | |
| 13z + 7 | |
| \(\frac{5}{12}\)z + \(\frac{5}{12}\) |