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