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 -9a - 3a = 6a + 5y - 4 for a in terms of y.
| \(\frac{8}{13}\)y - \(\frac{2}{13}\) | |
| y + 1 | |
| -\(\frac{8}{15}\)y + \(\frac{4}{15}\) | |
| 2\(\frac{1}{2}\)y + 1 |