1.7-1.7乘以九分之五加九分之四的简便运算是多少?

2024-12-20 22:31:03
推荐回答(1个)
回答1:

1.7-1.7x5/9+4/9
=1.7x(1-5/9)+4/9
=1.7x4/9+4/9
=(1.7+1)x4/9
=2.7x4/9
=1.2