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 8a + 9a = -2a - 8z + 7 for a in terms of z.
| -1\(\frac{7}{10}\)z + \(\frac{7}{10}\) | |
| 8z - \(\frac{1}{2}\) | |
| \(\frac{11}{14}\)z + \(\frac{1}{14}\) | |
| z - \(\frac{3}{11}\) |