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 3b - 5b = 5b + 7z - 1 for b in terms of z.
| -5z - 4 | |
| -6z + \(\frac{1}{2}\) | |
| \(\frac{9}{10}\)z - \(\frac{7}{10}\) | |
| -6z + 6 |