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 8b + 7b = 7b - 5z - 3 for b in terms of z.
| -12z - 3 | |
| \(\frac{1}{15}\)z + \(\frac{1}{5}\) | |
| -\(\frac{2}{5}\)z + \(\frac{1}{5}\) | |
| -\(\frac{5}{7}\)z + \(\frac{1}{7}\) |