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 - 7a = -2a + 9y - 4 for a in terms of y.
| -1\(\frac{1}{2}\)y - \(\frac{3}{4}\) | |
| -4y + 1 | |
| -6y - 1 | |
| \(\frac{2}{15}\)y - \(\frac{2}{15}\) |