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 c + 7c = -5c - 2z + 4 for c in terms of z.
| 2\(\frac{1}{2}\)z + 2 | |
| -\(\frac{3}{10}\)z - \(\frac{7}{10}\) | |
| -1\(\frac{1}{2}\)z + \(\frac{2}{3}\) | |
| -\(\frac{1}{9}\)z + \(\frac{2}{9}\) |