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 + 2a = 8a - 8z - 4 for a in terms of z.
| z - 1\(\frac{1}{6}\) | |
| -10z - 4 | |
| \(\frac{1}{14}\)z - \(\frac{1}{2}\) | |
| -\(\frac{7}{8}\)z - \(\frac{7}{8}\) |