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