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 -7a + 2a = 8a - 4y - 1 for a in terms of y.
| -\(\frac{8}{13}\)y - \(\frac{6}{13}\) | |
| -\(\frac{4}{17}\)y + \(\frac{7}{17}\) | |
| 2\(\frac{3}{4}\)y - 1 | |
| \(\frac{2}{5}\)y + \(\frac{1}{15}\) |