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 + 3a = -8a - 2z - 7 for a in terms of z.
| -1\(\frac{2}{3}\)z - 2\(\frac{1}{3}\) | |
| -2z - 2 | |
| \(\frac{8}{13}\)z + \(\frac{8}{13}\) | |
| 7z - 6 |