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 -6a - 9a = -4a + 7z + 1 for a in terms of z.
| -8z - \(\frac{1}{2}\) | |
| -1\(\frac{3}{10}\)z + \(\frac{1}{10}\) | |
| -3z + 1\(\frac{2}{3}\) | |
| 2\(\frac{2}{7}\)z - 1\(\frac{1}{7}\) |