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 = 5a + 4z - 4 for a in terms of z.
| -5z - 9 | |
| -\(\frac{8}{11}\)z - \(\frac{2}{11}\) | |
| \(\frac{1}{2}\)z + 1 | |
| \(\frac{1}{16}\)z + \(\frac{3}{8}\) |