=8 649 813 501

77777 x 111213 = 8 649 813 501

ai k mk,mk k lại

8649813501

\(12.\left(\dfrac{29292929}{56565656}+\dfrac{66666}{77777}\right)=12.\left(\dfrac{29}{56}+\dfrac{6}{7}\right)=12.\left(\dfrac{29}{56}+\dfrac{48}{56}\right)=12.\dfrac{77}{56}=\dfrac{33}{2}\)

\(12.\left(\dfrac{29292929}{56565656}+\dfrac{66666}{77777}\right)=12.\left(\dfrac{29.1010101}{56.1010101}+\dfrac{6.11111}{7.11111}\right)=12.\left(\dfrac{29}{56}+\dfrac{6}{7}\right)=12.\dfrac{11}{8}=\dfrac{33}{2}\)

TL

a, 100005175327

b, 148904438

c, 10746660

HT

Mình mất 5 phút để giải, bạn mất 1 giây để t.i.c.k, nhớ t.i.c.k mình nhá

a) \(\dfrac{77777}{99999}=\dfrac{7\times11111}{9\times11111}=\dfrac{7}{9}\) 

b) \(\dfrac{36363636}{29292929}=\dfrac{36\times1010101}{29\times1010101}=\dfrac{36}{29}\) 

c) \(\dfrac{102102102}{410410410}=\dfrac{102\times1001001}{410\times1001001}=\dfrac{102}{410}=\dfrac{51}{205}\)

Ta có: \(\dfrac{66666\cdot87654-33333}{22222\cdot87650-77777}\)

\(=\dfrac{33333\left(2\cdot87654-1\right)}{11111\left(2\cdot87650-7\right)}\)

\(=\dfrac{3\cdot175307}{175293}=\dfrac{525921}{175293}=\dfrac{175307}{58431}\)

???????????????????????????????????????????!!!!!!!!!

Bằng 99999,875 nha !

77777/99999 = 7/9 

K mình nha bạn

=7/9

kb nha