Question

1又3/5x5=？ 8-1又3/4=？1/2 x2/3x3/4=？ 2x3/4-1x3/4=？ 27x15/26=？

数学简便计算，求过程，快点，谢谢

Answer 1

1又3/5x5=(1+3/5)x5=5+3=8
8-1又3/4=8-(1+3/4)=8-1-3/4)=7-3/4=6又1/4
1/2 x2/3x3/4=1/4
2x3/4-1x3/4=3/4x(2-1)=3/4
27x15/26=(26+1)x15/26=15+15/26=15又15/26

追问

27x15/26=(26+1)x15/26=15+15/26=15又15/26 ?

追答

27x15/26=(26+1)x15/26=26x15/26+15/26=15+15/26=15又15/26 ?

Answer 2

1又3/5x5
=8/5x5
=8

8-1又3/4
=8-7/4
=32/4-7/4
=25/4
=6又1/4

1/2 x2/3x3/4
=1/3x3/4
=1/4

2x3/4-1x3/4
=(2-1)x3/4
=1x3/4
=3/4

27x15/26
=405/26
=15又15/26

追问

27x15/26
=405/26 ?

追答

27x15/26
=405/26
=15又15/26

Answer 3

1又3/5x5=？ 8-1又3/4=？1/2 x2/3x3/4=？ 2x3/4-1x3/4=？ 27x15/26=？
1又3/5x5=(5/5+3/5) x5=8/5 x5=8
8-1又3/4=32/4-(4/4+3/4)=(32-7)/4=15/4
1/2 x2/3x3/4=2/6 x3/4 =6/24=1/4
2x3/4-1x3/4=6/4-3/4=3/4
27x15/26=405/26
往采纳

Answer 4

1又3/5x5=(1+3/5)*5=5+3=8

8-1又3/4=8-1-3/4=7-3/4=6又1/4
1/2 x2/3x3/4=1/3 * 3/4=1/4

2x3/4-1x3/4=(2-1)*3/4=3/4

27x15/26=(26+1)*15/26=15+15/26=15又15/26

望采纳！ O(∩_∩)O