Выполните сложение -6+4 5/8 -2/9+5/6 2 21/26+(-3 4/13)
-6+4 5/8=-1 3/8 -2/9 +5/6=-8/36+30/36=22/36=11/18 2 21/26+(-3 4/13)=73/26-43/13=73/26-86/26=-13/26=-1/2