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