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 3a + 4a = 2a + 7z - 1 for a in terms of z.
| -\(\frac{6}{11}\)z - \(\frac{9}{11}\) | |
| \(\frac{1}{2}\)z - 1\(\frac{1}{2}\) | |
| 1\(\frac{2}{7}\)z + 1\(\frac{2}{7}\) | |
| 3z - 1 |