(15又2/3）×5/6—7又1/3×5/6+10 - 知识问答

(15又2/3）×5/6—7又1/3×5/6+10又1/3×5/6 帮帮忙啊,速度!（解题过程详细点）

1个回答

(-15又2/3)×5/6-7又1/3×5/6+10又1/3×5/6
=(-15又2/3-7又1/3+10又1/3)×5/6
=(-23+10又1/3)×5/6
=(-12又2/3)×5/6
=(-38/3)×5/6
=-95/6
-3-[5-0.2÷4/5×(-2)²]
=-3-(5-1/5×5/4×4)
=-3-(5-1)
=-3-4
=-7

相关问题