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 -5a - 7a = -a - z - 4 for a in terms of z.
| -1\(\frac{4}{11}\)z - \(\frac{1}{11}\) | |
| -1\(\frac{1}{2}\)z + 1 | |
| -1\(\frac{1}{8}\)z - \(\frac{3}{4}\) | |
| 6z + 3 |