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