раскройте скобки и найдите значение выражения: 8,7 (13,7-15,2)-(24,6-20,1).
1)8.7+(13.7-15.2)-(24.6-20.1)=8.7+13.7-15.2-24.6+20.1=2.7
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1)8.7+(13.7-15.2)-(24.6-20.1)=8.7+13.7-15.2-24.6+20.1=2.7