We can convert all the fractions to decimals and then arrange them in ascending order:
- 16/22 ≈ 0.727
- -5/18 ≈ -0.278
- 2/-21 ≈ -0.095
- -7/12 ≈ -0.583
Therefore, the ascending order would be:
2/-21 ≈ -0.095 < -5/18 ≈ -0.278 < -7/12 ≈ -0.583 < 16/22 ≈ 0.727
So the final arrangement in ascending order is:
2/-21, -5/18, -7/12, 16/22