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 7a - 3a = 3a + 4z - 9 for a in terms of z.
| 1\(\frac{3}{4}\)z - 2\(\frac{1}{4}\) | |
| z + \(\frac{9}{14}\) | |
| 11z - 8 | |
| -\(\frac{3}{10}\)z - \(\frac{3}{10}\) |