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 5c + 8c = 9c - 7z + 1 for c in terms of z.
| -1\(\frac{4}{5}\)z - 1\(\frac{2}{5}\) | |
| 3\(\frac{3}{4}\)z - \(\frac{1}{4}\) | |
| -\(\frac{2}{7}\)z + \(\frac{6}{7}\) | |
| \(\frac{2}{3}\)z - \(\frac{7}{9}\) |