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