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 -7a + 2a = 2a + 8y + 1 for a in terms of y.
| 2\(\frac{2}{3}\)y + 1\(\frac{2}{3}\) | |
| -\(\frac{2}{3}\)y - \(\frac{1}{9}\) | |
| 8y - 8 | |
| -1\(\frac{1}{2}\)y + 2 |