Question

4分之3减5分之3乘8分之1

Answer 1

解:3/4-3/5x1/8

=3/4-(3x1)/(5x8)

=3/4-3/40

=30/40-3/40

=27/40

分数加减法

1、同分母分数相加减，分母不变，即分数单位不变，分子相加减，能约分的要约分。

2、异分母分数相加减，先通分，即运用分数的基本性质将异分母分数转化为同分母分数，改变其分数单位而大小不变，再按同分母分数相加减法去计算，最后能约分的要约分。

Answer 2

解:3/4-3/5x1/8
=3/4-(3x1)/(5x8)
=3/4-3/40
=30/40-3/40
=27/40

Answer 3

4分之3减5分之3乘8分之1
3/4-3/5x1/8
=3/4-3/40
=30/40-3/40
=27/40

Answer 4

3/4-3/5 * 1/8
=3/4-3/40
=30/40-3/40
=27/40

Answer 5

如图所示