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