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 8b - 3b = 6b - 9z - 7 for b in terms of z.
| -3z - 3\(\frac{1}{2}\) | |
| -4z + 2 | |
| 7z - 3 | |
| -4\(\frac{1}{2}\)z + 4\(\frac{1}{2}\) |