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 -7a + 2a = -9a + 8z + 1 for a in terms of z.
| 3z + \(\frac{1}{2}\) | |
| z + \(\frac{3}{14}\) | |
| \(\frac{5}{6}\)z + \(\frac{1}{6}\) | |
| 1\(\frac{1}{5}\)z - \(\frac{1}{10}\) |