Ответ:
1) 65+(53-21)=65+32=97
2) (500+100)-200=600-200=400
3) (65-21)+(24+2)=44+26=70
4) 1000-(600-100)=1000-500=500
5) (16+12)+40=28+40=68
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Ответ:
1) 65+(53-21)=65+32=97
2) (500+100)-200=600-200=400
3) (65-21)+(24+2)=44+26=70
4) 1000-(600-100)=1000-500=500
5) (16+12)+40=28+40=68