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 4a - 9a = -6a - 3z + 7 for a in terms of z.
| \(\frac{3}{5}\)z + \(\frac{7}{10}\) | |
| -\(\frac{1}{9}\)z + \(\frac{4}{9}\) | |
| -\(\frac{2}{3}\)z - 1\(\frac{2}{3}\) | |
| -1\(\frac{1}{4}\)z + 1\(\frac{1}{2}\) |