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 -2a + a = -3a + z + 8 for a in terms of z.
| z + 8 | |
| -\(\frac{10}{13}\)z + \(\frac{9}{13}\) | |
| -\(\frac{7}{9}\)z - \(\frac{1}{9}\) | |
| 1\(\frac{2}{9}\)z - \(\frac{2}{3}\) |