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 -8a + 7a = -3a - 9z + 5 for a in terms of z.
| 2\(\frac{1}{3}\)z + 2\(\frac{2}{3}\) | |
| 2\(\frac{1}{6}\)z - \(\frac{2}{3}\) | |
| 3\(\frac{1}{5}\)z - 1 | |
| 4z - 1\(\frac{1}{3}\) |