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