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 -5b + 8b = 4b + 7x - 5 for b in terms of x.
| x + 7 | |
| \(\frac{1}{9}\)x + \(\frac{5}{9}\) | |
| \(\frac{2}{13}\)x + \(\frac{1}{13}\) | |
| 1\(\frac{3}{7}\)x - 1\(\frac{2}{7}\) |