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 -a - 4a = -7a - 9x - 4 for a in terms of x.
| \(\frac{7}{16}\)x + \(\frac{7}{16}\) | |
| -7x - 9 | |
| -\(\frac{7}{12}\)x - \(\frac{1}{2}\) | |
| -\(\frac{5}{6}\)x - \(\frac{2}{3}\) |