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 -2b - 9b = -7b + 4y + 9 for b in terms of y.
| -1\(\frac{1}{2}\)y + 1\(\frac{1}{2}\) | |
| y + 9 | |
| 2\(\frac{3}{5}\)y + 1\(\frac{4}{5}\) | |
| -\(\frac{1}{3}\)y - \(\frac{7}{15}\) |