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 = -9b - 8z + 7 for b in terms of z.
| z + 1 | |
| -3z + 3\(\frac{1}{2}\) | |
| -3\(\frac{1}{3}\)z + 2\(\frac{2}{3}\) | |
| -\(\frac{2}{13}\)z + \(\frac{3}{13}\) |