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