РЕШИ ПРИМЕР:
(-0.5:1.25+1 2/5 :(-1 4/7 )-10/11)*(-2.5)
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(-0.5:1.25+1 2/5 :(-1 4/7 )-10/11)*(-2.5)=1. -0.5:1.25=-0,4=-4/10=-2/5
2. 1 2/5 :(-1 4/7 )= 7/5:(-11/7)=-7/5*7/11=-49/55
3. -2/5+(-49/55)-10/11= -22/55-49/55-50/55= -121/55
4. -2,5=-2 5/10=-2 1/2=-5/2
5. -121/55* (-5/2)=121/11*1/2=121/22=5,5