Question

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(-10)+(+7)
(-8)-6
5.6+(-0.9)+4.4+(-8.1)+(-0.1)
2分之1+(-3分之2)-(-5分之4)+(-2分之1)-(+3分之1)
-3分之1+12分之5+丨3分之2-4分之3丨
全要过程！！

Answer 1

①(-10)+(+7)＝-10+7＝-3
②(-8)-6＝-8-6＝-14
③5.6+(-0.9)+4.4+(-8.1)+(-0.1)＝5.6+4.4+(-0.9)+(-0.1)+(-8.1)=10+(-9.1)=0.9
④2分之1+(-3分之2)-(-5分之4)+(-2分之1)-(+3分之1)
=1/2+(-1/2)+(-2/3)-(+1/3)-(-4/5)
=1/2-1/2-2/3-1/3+4/5
=(1/2-1/2)-(2/3+1/3)+4/5
=0-1+4/5
=-1/5
④-3分之1+12分之5+丨3分之2-4分之3丨
=-1/3+5/12+|8/12-9/12|
=4/12+5/12+|-1/12|
=9/12+1/12
=10/12
=5/6