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