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 -7b + 4b = -8b + 8z + 9 for b in terms of z.
| \(\frac{3}{7}\)z + \(\frac{5}{7}\) | |
| 4z + 9 | |
| -\(\frac{1}{4}\)z + \(\frac{3}{4}\) | |
| -6z + 2 |