Bài 1 A) (35-17)-(25-17+22) B) 5- (1997-2005)+1997 C) -5+(-37-45+51)-(-37+51) D) – (81-32-47)+81-(32+2) E) -(1964-235+58)+(1

1 bình luận về “Bài 1 A) (35-17)-(25-17+22) B) 5- (1997-2005)+1997 C) -5+(-37-45+51)-(-37+51) D) – (81-32-47)+81-(32+2) E) -(1964-235+58)+(1”

1. a, (35-17)-(25-17+22)

   = 18-(8+22)

   = 18-30

   =-12

   ——-

   b,5- (1997-2005)+1997

   = 5- (-8)+1997

   = 13+1997

   =2010

   ——-

   c,-5+(-37-45+51)-(-37+51)

   =-5+(-31)-14

   =-50

   ——-

   d, – (81-32-47)+81-(32+2)

   =-2+81-34

   =45

   ——-

   e,-(1964-235+58)+(1964-235-42)

   =-(1729+58)+(1964-235-42)

   =-1787+(1964-235-42)

   =-1787+1687

   =-100

   @Lynacute

    

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