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 2a - 6a = a + 8z - 7 for a in terms of z.
| -z + 2\(\frac{1}{2}\) | |
| -z + 6 | |
| \(\frac{2}{3}\)z + \(\frac{8}{9}\) | |
| 14z - 7 |