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 = 8a + 5z - 5 for a in terms of z.
| -\(\frac{1}{2}\)z + \(\frac{1}{14}\) | |
| -1\(\frac{1}{6}\)z + \(\frac{5}{12}\) | |
| \(\frac{1}{6}\)z - \(\frac{1}{3}\) | |
| \(\frac{1}{8}\)z + \(\frac{3}{8}\) |