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 - a = 3a - 8y - 2 for a in terms of y.
| -\(\frac{1}{3}\)y - \(\frac{1}{3}\) | |
| \(\frac{1}{9}\)y - \(\frac{2}{3}\) | |
| \(\frac{7}{10}\)y + \(\frac{1}{5}\) | |
| \(\frac{2}{7}\)y - \(\frac{6}{7}\) |