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