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 - 3a = -4a - 6z + 9 for a in terms of z.
| -\(\frac{1}{2}\)z + 1\(\frac{1}{2}\) | |
| 13z + 8 | |
| -z + 2 | |
| \(\frac{3}{7}\)z - 1 |