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 a + 6a = 8a + 2z + 4 for a in terms of z.
| -3\(\frac{1}{3}\)z + 2 | |
| -\(\frac{3}{5}\)z - \(\frac{1}{10}\) | |
| \(\frac{4}{7}\)z - \(\frac{4}{7}\) | |
| -2\(\frac{1}{6}\)z - 1 |