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 - a = -2a - 9x + 3 for a in terms of x.
| \(\frac{7}{13}\)x - \(\frac{7}{13}\) | |
| -2\(\frac{1}{8}\)x - \(\frac{7}{8}\) | |
| -8x + 3 | |
| \(\frac{1}{10}\)x + \(\frac{9}{10}\) |