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