2 2/9×3.7-2 2/9×(-5.3)

2 2/9 · 3,7 - 2 2/9 · (-5,3) = 2 2/9 · 3 7/10 - 2 2/9 · (-5 3/10) = 20/9 · 37/10 - 20/9 · (-53/10) = 74/9 - (-106/9) = 74/9 + 106/9 = 180/9 = 20