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