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 = -5a + z + 1 for a in terms of z.
| -3\(\frac{1}{2}\)z - \(\frac{1}{2}\) | |
| -\(\frac{1}{2}\)z + \(\frac{3}{14}\) | |
| -\(\frac{8}{9}\)z + \(\frac{7}{9}\) | |
| -6z + 1 |