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 4c + 5c = -6c + 7x + 9 for c in terms of x.
| \(\frac{1}{5}\)x + \(\frac{9}{10}\) | |
| -1\(\frac{5}{9}\)x + \(\frac{1}{9}\) | |
| -\(\frac{3}{10}\)x - \(\frac{3}{10}\) | |
| 1\(\frac{5}{6}\)x - \(\frac{1}{6}\) |