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