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