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