Вопрос от посетителя:
Раскройте скобки и упростите выражения: 1)5m+(7m-(2m-3))= 2)2(m+1)+(6m+(2-4m))= 3)(3m-7)+(2m-(5+(4-m)))= 4)(2(m-1)-1)+(2m+(1-(2-m)))= 5)1+(m-(1+(m-(1+m))))=
Илюха отвечает:
1)5m+(7m-(2m-3))= 5m+(7m-2m+3)=10m+3
2)2(m+1)+(6m+(2-4m))= 2m+ 1 + (6m+2-4m)=4m+3
3)(3m-7)+(2m-(5+(4-m)))= 3m-7+(2m-(5+4-m)= 3m-7+(2m-9+m)=6m-16
4)(2(m-1)-1)+(2m+(1-(2-m)))= (2m-2)-1) +(2m+(1-2+m))=2m-3 + 3m-1=5m-4
5)1+(m-(1+(m-(1+m))))= 1+(m-(1+(m-1-m)))=1+(m-1)=m