1)Вычислите (-1 1/3 + 2 5/6) : (-3/7) - 5,38 2)Вычислите -(11,2-(-3,9-(5-9))). Created by Ridikulus. algebra-ru

7) - 5,38 2)Вычислите -(11,2-(-3,9-(5-9)))...

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1)Вычислите (-1 1/3 + 2 5/6) : (-3/7) - 5,38
2)Вычислите -(11,2-(-3,9-(5-9)))

Answers & Comments

irinaorlova2 (-1 1\3+2 5\6):(-3\7)-5.38= -8.88
1) -1 1\3+2 5\6=1 +(-2\6+5\6)=1 3\6=1 1\2
2)1 1\2:(-3\7)=3\2*(-7\3)=-7\2=-2 1\2=-3.5
3)-3.5-5.38=-8,88

-(11.2-(-3.9-(5-9))=-(11.2-(-3.9+4))=-(11.2-0.1)=-11.1

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