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 -2a - 9a = 5a + 6y + 3 for a in terms of y.
| 1\(\frac{1}{7}\)y + \(\frac{2}{7}\) | |
| -2\(\frac{1}{7}\)y - \(\frac{3}{7}\) | |
| -3y + 8 | |
| \(\frac{2}{5}\)y + 1 |