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