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 - 9c = -4c - z - 7 for c in terms of z.
| \(\frac{1}{2}\)z - \(\frac{1}{4}\) | |
| z + \(\frac{7}{9}\) | |
| z - \(\frac{7}{15}\) | |
| 8z - 7 |