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 + 4a = -8a + 4z - 7 for a in terms of z.
| \(\frac{2}{3}\)z - 1\(\frac{2}{3}\) | |
| 6z - 4\(\frac{1}{2}\) | |
| z - \(\frac{7}{15}\) | |
| 1\(\frac{6}{11}\)z - \(\frac{9}{11}\) |