20.9+10.5÷(5.5-4.8)怎么简算?
问题描述:
20.9+10.5÷(5.5-4.8)怎么简算?
答
20.9+10.5÷(5.5-4.8)
=20.9+105/10*10/7
=20.9++13
=33.9