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 -5c + 7c = 4c - y - 4 for c in terms of y.
| y - 1\(\frac{2}{3}\) | |
| \(\frac{8}{9}\)y + \(\frac{4}{9}\) | |
| \(\frac{5}{8}\)y + \(\frac{9}{16}\) | |
| -1\(\frac{2}{3}\)y + \(\frac{4}{9}\) |