Question

5/7+9/8×5/9+3/8简便方法？

Answer 1

这道题题目可以按照综合运算先乘除后加减的顺序来进行计算，然后再用交换律，就可以很简便地求出答案了：
5/7+9/8×5/9+3/8
=5/7+5/8+3/8
=(5/8+3/8)+5/7
=1+5/7
=12/7

Answer 2

简便计算是先计算分母相同的项
5/7+5/9+(9/8+3/8)
=5/7+5/9+3/2
=(5x18+5x14+3x63)/126
=349/126=2.769841

Answer 3

5／7＋9／8×5／9十3／8
＝5／7＋5／8＋3／8
＝5／7＋8／8
＝5／7＋l
＝l又7分之5

Answer 4

解: 5/7+9/8x5/9+3/8
=5/7+5/8+3/8
=5/7+（5/8+3/8）
=5/7+1
=1 5/7

Answer 5

5/7+9/8×5/9+3/8
=5/7+5/8+3/8
=5/7+(5/8+3/8)
=5/7+1
=1又5/7