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