Пошаговое объяснение:
-(6,78-5 1/9)-(0,22-3 8/9)=
= - (6 78/100-5 1/9)-(22/100-3 8/9)=
= - (6 39/50-5 1/9)-(11/50-35/9)=
= - 339/50+46/9-11/50+35/9=
= - 350/50+81/9= (- 3150+4050)/450=
= 900/450=2
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Пошаговое объяснение:
-(6,78-5 1/9)-(0,22-3 8/9)=
= - (6 78/100-5 1/9)-(22/100-3 8/9)=
= - (6 39/50-5 1/9)-(11/50-35/9)=
= - 339/50+46/9-11/50+35/9=
= - 350/50+81/9= (- 3150+4050)/450=
= 900/450=2