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 8a - 8a = 6a - 9y + 8 for a in terms of y.
y - 8 | |
-\(\frac{3}{14}\)y + \(\frac{1}{7}\) | |
-\(\frac{1}{2}\)y + 4 | |
-\(\frac{6}{13}\)y - \(\frac{3}{13}\) |