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 - 7a = 4a - 6z + 8 for a in terms of z.
| -\(\frac{1}{9}\)z - \(\frac{8}{9}\) | |
| \(\frac{1}{16}\)z + \(\frac{3}{8}\) | |
| -\(\frac{1}{4}\)z + 2\(\frac{1}{4}\) | |
| 3\(\frac{2}{5}\)z + 1\(\frac{2}{5}\) |