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