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