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 = -7a - 9z - 6 for a in terms of z.
| -\(\frac{4}{5}\)z + \(\frac{2}{15}\) | |
| -\(\frac{1}{7}\)z - \(\frac{1}{2}\) | |
| -\(\frac{1}{4}\)z - \(\frac{1}{2}\) | |
| -2z + 2\(\frac{2}{3}\) |