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 - 9a = 6a + z + 2 for a in terms of z.
| -1\(\frac{6}{7}\)z + \(\frac{2}{7}\) | |
| 10z + 2 | |
| \(\frac{1}{3}\)z - 1\(\frac{1}{3}\) | |
| 1\(\frac{5}{8}\)z + \(\frac{1}{2}\) |