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 - 4a = -2a - 7y + 7 for a in terms of y.
| y + \(\frac{1}{11}\) | |
| -\(\frac{3}{11}\)y + \(\frac{7}{11}\) | |
| 15y + 2 | |
| y + 2 |