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 -5b + 9b = -9b + z + 6 for b in terms of z.
| -2z + 1\(\frac{1}{2}\) | |
| -1\(\frac{4}{5}\)z + \(\frac{1}{5}\) | |
| \(\frac{5}{13}\)z + \(\frac{8}{13}\) | |
| -1\(\frac{6}{7}\)z + 1\(\frac{2}{7}\) |