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 6c + 3c = 5c - 9y - 9 for c in terms of y.
| \(\frac{10}{13}\)y + \(\frac{4}{13}\) | |
| -2\(\frac{1}{2}\)y + 4\(\frac{1}{2}\) | |
| -12y - 9 | |
| \(\frac{3}{10}\)y - \(\frac{9}{10}\) |