-3.4-(4.7) (-23)-(+59)-(-35)

问题描述:

-3.4-(4.7) (-23)-(+59)-(-35)
-5又6分之5-(+9又3分之2)-(-17又4分之3)+(-3又2分之1)
-5.3-3.2+2.5-/-5.7/

-3.4-(4.7) = -0.1-3.3-4.7 = -0.1-8.0 = -8.1
(-23)-(+59)-(-35)= -23 -59 +35 = 12 -59 = -47
-5又6分之5-(+9又3分之2)-(-17又4分之3)+(-3又2分之1)
=-35/6 -29/3 + 71/4 -7/2
=-35/6 -58/6 + 71/4 -14/4
=-94/6 + 57/4
=-188/12 + 171/12
=-17/12
=-1又12分之5
-5.3-3.2+2.5-/-5.7/
=-5.3-3.2+2.5+5.7
=5.7-5.3-3.2+2.5
=0.4+2.5-3.2
=2.9-3.2
=-0.3这才3个!!-5.3-3.2+2.5-/-5.7/这个呢!!-5又6分之5-(+9又3分之2)-(-17又4分之3)+(-3又2分之1)=-35/6 -29/3 + 71/4 -7/2=-35/6 -58/6 + 71/4 -14/4=-93/6+ 57/4=-186/12+ 171/12=-15/12=-5/4=-1又4分之1