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 -b + 9b = 7b - 4z + 9 for b in terms of z.
| \(\frac{4}{5}\)z - \(\frac{3}{5}\) | |
| 2\(\frac{1}{4}\)z + \(\frac{3}{4}\) | |
| 1\(\frac{5}{8}\)z - 1\(\frac{1}{8}\) | |
| 4z - \(\frac{1}{3}\) |