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 -5a - 6a = -4a - 7z - 8 for a in terms of z.
| -2\(\frac{2}{5}\)z + \(\frac{3}{5}\) | |
| -3\(\frac{1}{3}\)z - 1\(\frac{2}{3}\) | |
| z + 8 | |
| 1\(\frac{1}{2}\)z - \(\frac{7}{8}\) |