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 -4a - 8a = -2a + z - 8 for a in terms of z.
| -4\(\frac{1}{2}\)z + 4 | |
| -7z + 7 | |
| -\(\frac{1}{13}\)z + \(\frac{3}{13}\) | |
| 2\(\frac{1}{5}\)z + 1\(\frac{3}{5}\) |