Question

-3-[-5+(1-0.2÷3/5)÷(-2)]

13分之8/13÷6+(-7又2/13)÷6+(-36又6/13)×1/6

Answer 1

-3-[-5+(1-0.2÷3/5)÷(-2)]
= -3-【-5+2/3÷（-2）】
= -3-【-5又1/3】
=-3+5又1/3
=2又1/3

13分之8/13÷6+(-7又2/13)÷6+(-36又6/13)×1/6
=（8/13-7又2/13-36又6/13）×1/6
= -43×1/6
= -43/6

Answer 2

-3-[-5+(1-0.2÷3/5)÷(-2)]=-3-[-5+(-1/5*5/3))÷(-2)]=-3-[-5+(-3)÷(-2)]=-3-[-5+3/2)]=-3-(-7/2)
=-3+7/2=1/2

追问

13分之8/13÷6+(-7又2/13)÷6+(-36又6/13)×1/6这道呢?