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 2a - 7a = 7a - 2x - 5 for a in terms of x.
| -x + 1 | |
| \(\frac{1}{4}\)x - 1\(\frac{1}{8}\) | |
| -\(\frac{5}{8}\)x + \(\frac{5}{16}\) | |
| \(\frac{1}{7}\)x + 1 |