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 -8a + 3a = -9a - 4z + 4 for a in terms of z.
| -11z - 1 | |
| z + \(\frac{4}{5}\) | |
| -7z + 4 | |
| \(\frac{2}{3}\)z + 2 |