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 + 8c = 6c + 7x - 4 for c in terms of x.
| -9x + 1 | |
| \(\frac{1}{10}\)x + \(\frac{2}{5}\) | |
| -\(\frac{1}{7}\)x + \(\frac{1}{7}\) | |
| \(\frac{2}{3}\)x - \(\frac{2}{3}\) |