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 - 2c = 5c - 2z - 5 for c in terms of z.
| -\(\frac{6}{11}\)z - \(\frac{3}{11}\) | |
| \(\frac{11}{18}\)z - \(\frac{5}{18}\) | |
| 11z - 5 | |
| z - 2\(\frac{1}{2}\) |