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 2a - 9a = a + y + 5 for a in terms of y.
| 2y + 1\(\frac{1}{3}\) | |
| 2\(\frac{1}{5}\)y + 1\(\frac{2}{5}\) | |
| 10y + 5 | |
| -4\(\frac{2}{3}\)y - 1 |