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 - 3c = 9c - 2z - 7 for c in terms of z.
| -\(\frac{1}{2}\)z + 3\(\frac{1}{2}\) | |
| -10z - 6 | |
| 2\(\frac{1}{7}\)z - 1 | |
| -\(\frac{7}{15}\)z - \(\frac{2}{5}\) |