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 + 6a = a + 7z - 3 for a in terms of z.
| z - \(\frac{7}{11}\) | |
| -1\(\frac{1}{7}\)z - \(\frac{5}{7}\) | |
| \(\frac{1}{6}\)z - \(\frac{1}{2}\) | |
| z + \(\frac{6}{7}\) |