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 9a - 3a = 8a - 5y + 7 for a in terms of y.
| -1\(\frac{3}{7}\)y - 1 | |
| -\(\frac{5}{6}\)y + \(\frac{1}{4}\) | |
| -2\(\frac{2}{3}\)y + 1 | |
| -2y + 7 |