Question

tính nhanh : 75/100 + 18/21 + 19/32 + 1/4 + 3/21 + 13/32

Answer 1

75/100+18/21+19/32+1/4+3/21+13/32

=(75/100+1/4)+(18/21+3/21)+(19/32+13/32)

=1+1+1=3

Answer 2

75/100+18/21+19/32+1/4+3/21+13/32

=1/4+75/100+19/32+13/32+3/21+18/21

=1+1+1=3

Answer 3

minh cho ban 1 k nhe