43+(-77)+37+(-23) 过程
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![43+(-77)+37+(-23) 过程](/uploads/image/z/201594-66-4.jpg?t=43%2B%28-77%29%2B37%2B%28-23%29+%E8%BF%87%E7%A8%8B)
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43+(-77)+37+(-23) 过程
43+(-77)+37+(-23) 过程
43+(-77)+37+(-23) 过程
43+(-77)+37+(-23)
=43-77+37-23
=(43+37)-(77+23)
=80-100
= -20
43+(-77)+37+(-23)
=43+37-(77+23)
=80-100
=-20
=(43+37)-(77+23)=-20
+号可以不看,
(43-23) +(37-77)
=20-40
=-20
O(∩_∩)O~
43+(-77)+37+(-23)
=43-77+37-23
=-20
43+(-77)+37+(-23)=43+37-(77+23)=80-100=-20