1/2+(-2/3)+4/5+(-1/2)+(-1/3) (-5.9)-(-6.1) 28-(-74) (-3.8)-(+7)
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![1/2+(-2/3)+4/5+(-1/2)+(-1/3) (-5.9)-(-6.1) 28-(-74) (-3.8)-(+7)](/uploads/image/z/249683-59-3.jpg?t=1%2F2%2B%28-2%2F3%29%2B4%2F5%2B%28-1%2F2%29%2B%28-1%2F3%29+%28-5.9%29-%28-6.1%29+28-%28-74%29+%28-3.8%29-%28%2B7%29)
1/2+(-2/3)+4/5+(-1/2)+(-1/3) (-5.9)-(-6.1) 28-(-74) (-3.8)-(+7)
1/2+(-2/3)+4/5+(-1/2)+(-1/3) (-5.9)-(-6.1) 28-(-74) (-3.8)-(+7)
1/2+(-2/3)+4/5+(-1/2)+(-1/3) (-5.9)-(-6.1) 28-(-74) (-3.8)-(+7)
1/2+(-2/3)+4/5+(-1/2)+(-1/3)=-1/5
(-5.9)-(-6.1)=0.2
28-(-74)=102
(-3.8)-(+7)=-10.8
-1/30;0。2;102;-10。8