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