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