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 -7a + 9a = 6a + 9y - 1 for a in terms of y.
| y + \(\frac{1}{13}\) | |
| \(\frac{3}{11}\)y + \(\frac{8}{11}\) | |
| -1\(\frac{1}{3}\)y + \(\frac{5}{6}\) | |
| 6y + 1 |