Calculeaza: ex.e/pag.29 URGENT!!!!
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Răspuns:
7911-(8211-(10100-5702)) =7911-(8211-4398)=7911-3813=4098
12563-(1456+(9876-867)=12563-(1456+9009)=12563-10465=2098
7015-(3015-(2004-4)=7015-(3015-2000)=7015-1015=6000
Explicație pas cu pas: