Ответ:
1)(-5+а) + (-а+2,3)=-5+а-а+2,3=-5+2,3=-2,7
2)(0,35+m) +(-4,4-m-2,65)=0,35+m-4,4-m-2,65=0,35-4,4-2,65=-6.7
3)(a-b) +(-4,4-m-2,25)=a-b-4,4-2,65-m=-7,05-m+a-b
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Ответ:
1)(-5+а) + (-а+2,3)=-5+а-а+2,3=-5+2,3=-2,7
2)(0,35+m) +(-4,4-m-2,65)=0,35+m-4,4-m-2,65=0,35-4,4-2,65=-6.7
3)(a-b) +(-4,4-m-2,25)=a-b-4,4-2,65-m=-7,05-m+a-b