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 -2a + 4a = -a + 3z - 8 for a in terms of z.
| z + 8 | |
| \(\frac{3}{14}\)z + \(\frac{1}{14}\) | |
| -3\(\frac{1}{3}\)z + 3 | |
| -7z - 8 |