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 + 8b = 2b - 4z + 7 for b in terms of z.
| -2\(\frac{2}{5}\)z + 1\(\frac{2}{5}\) | |
| 14z + 3 | |
| 6\(\frac{1}{2}\)z - 3 | |
| -\(\frac{4}{5}\)z - 1\(\frac{2}{5}\) |