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 - 7a = -2a + 9y + 1 for a in terms of y.
| 1\(\frac{3}{5}\)y - 1 | |
| -16y - 1 | |
| -3\(\frac{2}{3}\)y - \(\frac{2}{3}\) | |
| -1\(\frac{3}{8}\)y + \(\frac{5}{8}\) |