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 - 7b = 9b + 8z - 4 for b in terms of z.
| \(\frac{2}{5}\)z + \(\frac{3}{10}\) | |
| -2\(\frac{1}{3}\)z + 1\(\frac{1}{3}\) | |
| z + \(\frac{3}{4}\) | |
| -1\(\frac{7}{8}\)z + \(\frac{1}{2}\) |