负七分之二加正六分之五加-0.5加五分之四加六分之十九怎么列脱式计算?

2024-12-30 16:09:48
推荐回答(1个)
回答1:

-2/7+5/6-0.5+4/5+19/6
=-2/7+5/6-5/10+4/5+19/6
=-2/7+(5/6+19/6)+(-5/10+8/10)
=-2/7+4+3/10
=-20/70+21/70+4
=1/70+4
=4又1/70