2/5 + (-1/11)=2/5*11=22/55, 1/11*5=5/55. 22/55+(-5/55)=17/55.
Ответ:
2/5+(-1/11)=-0,49
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2/5 + (-1/11)=2/5*11=22/55, 1/11*5=5/55. 22/55+(-5/55)=17/55.
Ответ:
2/5+(-1/11)=-0,49
Удачи