4/15×21/16×40/9的简便计算
第1个回答 2021-11-10
4/15*20/16*40/9=4*20*40/(15*16*9丿=4*4*5*8*5/(3*5*4*4*9)=8*5/(3*9)=40/27
第2个回答 2021-11-11
=4×20/15×16×40/9
=4/3×4×40/9
=4×40/3×4×9
=40/27
=4/3×4×40/9
=4×40/3×4×9
=40/27
第3个回答 2021-11-11
4/15×20/16×40/9
=4/15×5/4×40/9
=1/3×40/9
=40/27
=4/15×5/4×40/9
=1/3×40/9
=40/27
第4个回答 2021-11-10
最佳答案: 4/9x24+4/9x49-4/9 =4/9x(24+49-1)=4/9x72 =32
第5个回答 2021-11-11
4/15×20/16×40/9
=1/3×40/9
=40/27
=1/3×40/9
=40/27