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