(67.8+9.48)÷0.96-2.58×3.35

问题描述:

(67.8+9.48)÷0.96-2.58×3.35
:(67.8+9.48)÷0.96-2.58×3.35
简便运算啊

(67.8+9.48)÷0.96-2.58×3.35
=(67.8+9.48)×25/24-8.643
=67.8×25/24+9.48×25/24-8.643
=70.625+9.875-8.643
=80.5-8.643
=71.857