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 -4b - 5b = 7b + 9z + 7 for b in terms of z.
| 3z + 7 | |
| -1\(\frac{3}{11}\)z - \(\frac{7}{11}\) | |
| \(\frac{1}{2}\)z - \(\frac{1}{2}\) | |
| z + \(\frac{1}{2}\) |