2 câu trả lời
34-21+16+51+10
=(34+16)+(51-21)+10
=50+30+10
=90
53-24+44-13+20
=(53-13)+(44-24)+20
=40+20+20
=80
Đáp án:
34-21+16+51+10
=(34+16)+(51-21)+10
=50+30+10
=90
53-24+44-13+20
=(53-13)+(44-24)+20
=40+20+20=80
34-21+16+51+10
=(34+16)+(51-21)+10
=50+30+10
=90
53-24+44-13+20
=(53-13)+(44-24)+20
=40+20+20
=80
Đáp án:
34-21+16+51+10
=(34+16)+(51-21)+10
=50+30+10
=90
53-24+44-13+20
=(53-13)+(44-24)+20
=40+20+20=80
