Question

a) 31995-81/42660-108 b)3.5.7.11.37-10101/1212120+40404 Ai làm nhanh mk tick cho nha

Answer 1

Câu a)  \(\dfrac{31995-81}{42660-108}=\dfrac{31914}{42552}=\dfrac{31914:10638}{42552:10638}\)

             =\(\dfrac{3}{4}\)

Câu b) \(\dfrac{\left(3.5.7.11.13.15.37-10101\right)}{121212+40404}\)

          =\(\dfrac{\left(3.5.7.11.13.15.37-3.7.13.37\right)}{3.7.13.37.12+3.7.13.37.4}\)

          =\(\dfrac{3.7.13.37\left(5.11.15-1\right)}{3.7.13.37\left(12+4\right)}\)

          = \(\dfrac{824}{16}\)=\(\dfrac{103}{2}\)

 

Answer 2

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Answer 3

a) \(\dfrac{31995-81}{42660-108}=\dfrac{31914}{42552}=\dfrac{3}{4}\)

b: \(\dfrac{3\cdot5\cdot7\cdot11\cdot37-10101}{1212120+40404}=\dfrac{32634}{1252524}=\dfrac{21}{806}\)