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