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 -4a - 9a = a - 6z + 1 for a in terms of z.
| 16z - 4 | |
| -2\(\frac{1}{2}\)z - \(\frac{1}{2}\) | |
| -\(\frac{3}{5}\)z - \(\frac{1}{5}\) | |
| \(\frac{1}{5}\)z - \(\frac{3}{10}\) |