14643/17

cho mình đúng nhé

65+891+135+989/731-47+69-253 = (65+135) + (891+69) - 47 - 253 + 989 / 731

                                                = 200 + 960 - 300 + 989/731

                                                = 860 + 989/731

                                                = 14643/17

104/25

Máy tính làm cảnh à ?

1089.24350205

65+891+135+909 phần 731-47+69-253 = 2000 phần 500 =4

\(C=\frac{65+891+135+909}{731-47+69-253}\)

\(C=\frac{\left(65+135\right)+\left(891+909\right)}{\left(731+69\right)-\left(47+253\right)}\)

\(C=\frac{200+1800}{800-300}\)

\(C=\frac{2000}{500}=4\)

Ta có:

\(C=\frac{65+891+135+909}{731-47+69-253}\)

\(\Leftrightarrow C=\frac{\left(65+135\right)+\left(891+909\right)}{\left(731+69\right)-\left(47+253\right)}\)

\(\Leftrightarrow C=\frac{200+1800}{800-300}\)

\(\Leftrightarrow C=\frac{2000}{500}=4\)

\(A=\frac{65+891+135+909}{731-47+69-253}\)

\(A=\frac{65+135+891+909}{731+69-47-253}\)

\(A=\frac{\left(65+135\right)+\left(891+909\right)}{\left(731+69\right)-\left(47+253\right)}\)

\(A=\frac{200+1800}{800-300}\)

\(A=\frac{2000}{500}=4\)

A = \(\frac{65+891+135+909}{731-47+69-253}\)

A = \(\frac{\left(65+135\right)+\left(891+909\right)}{\left(731+69\right)-\left(47+253\right)}\)

A = \(\frac{200+1800}{800-300}\)

A = \(\frac{2000}{500}\)

A = 4

\(A=\frac{65+891+135+909}{731-47+69-253}\)

\(A=\frac{5\times13+9\times9\times11+5\times27+9\times101}{17\times43-47+23\times3-11\times23}\)

\(A=\frac{5\times13+5\times27+9\times99+9\times101}{17\times43-47-11\times23+23\times3}\)

\(A=\frac{5\times\left(13+27\right)+9\times\left(99+101\right)}{17\times43-47-23\times\left(11-3\right)}\)

\(A=\frac{5\times40+9\times200}{17\times43-47-23\times8}\)

\(A=\frac{2000}{500}\)

\(A=4\)

no tính nhanh đc rùi! cho mk xin lỗi bn nhiều nha!!!!