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 9b - 3b = -6b - 2z - 7 for b in terms of z.
| 9z + 8 | |
| \(\frac{1}{15}\)z - \(\frac{7}{15}\) | |
| -1\(\frac{4}{7}\)z - \(\frac{1}{7}\) | |
| z + \(\frac{3}{7}\) |