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 - 9a = -4a + 8z + 1 for a in terms of z.
| z - \(\frac{5}{13}\) | |
| 8z + 4 | |
| -2\(\frac{1}{3}\)z - \(\frac{1}{3}\) | |
| 2\(\frac{3}{7}\)z + \(\frac{1}{7}\) |