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 4a - 8a = 7a + 9z + 5 for a in terms of z.
| -5\(\frac{2}{3}\)z - 1\(\frac{2}{3}\) | |
| 2z + 1 | |
| 11z + 9 | |
| 1\(\frac{1}{12}\)z - \(\frac{1}{6}\) |