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 -3a - 6a = -4a + 8y - 4 for a in terms of y.
| -9y + 1 | |
| -1\(\frac{2}{3}\)y + 2\(\frac{1}{3}\) | |
| 14y - 4 | |
| 2y - 2 |