\(B=10101\cdot\left(\dfrac{5}{111111}+\dfrac{5}{222222}-\dfrac{4}{111111}\right)\)

\(=10101\cdot\left(\dfrac{2}{222222}+\dfrac{5}{222222}\right)\)

\(=10101\cdot\dfrac{1}{31746}=\dfrac{7}{22}\)

A=7/22

Ai thấy đúng thì k cho mik nha

A=6/11 bạn ơi

\(A=10101.\left(\frac{5}{111111}+\frac{5}{222222}-\frac{4}{3.7.11.13.37}\right)\)

\(A=10101.\left(\frac{5}{111111}+\frac{5}{222222}-\frac{4}{111111}\right)\)

\(A=10101.\left(\frac{10}{222222}+\frac{5}{222222}-\frac{8}{222222}\right)\)

\(A=10101.\left(\frac{7}{222222}\right)\)

\(A=\frac{70707}{222222}\)

\(A=\frac{7}{22}\)

Vậy A = \(\frac{7}{22}\)

Chúc bạn học tốt!

10101 . \(\left(\frac{5}{111111}+\frac{5}{222222}-\frac{4}{3.7.11.13.37}\right)\)

= 10101 . \(\left(\frac{5}{111111}+\frac{5}{222222}-\frac{4}{111111}\right)\)

= 10101 . \(\frac{7}{222222}\)

= \(\frac{7}{22}\)

Lời giải:

Ta có:

\(A=10101.\left(\frac{5}{111111}+\frac{5}{222222}-\frac{4}{3.7.11.13.37}\right)\)

\(=10101.\left(\frac{5}{111111}+\frac{5}{222222}-\frac{4}{111111}\right)\)

\(=10101.\left(\frac{10}{222222}+\frac{5}{222222}-\frac{8}{222222}\right)\)

\(=10101.\left(\frac{10+5-8}{222222}\right)\)

\(=10101.\frac{7}{222222}\)

\(=\frac{7.10101}{22.10101}=\frac{7}{22}\)

Chúc bạn học tốt!Tick cho mình nhé!

\(10101.\left(\frac{5}{111111}+\frac{5}{222222}-\frac{4}{3.7.11.13.37}\right)\)

\(=10101.\left(\frac{5}{111111}+\frac{5}{222222}-\frac{4}{111111}\right)\)

\(=10101.\frac{7}{222222}\)

\(=\frac{7}{22}.\)

Chúc bạn học tốt!

=\(10101.\left(\frac{5}{111111}+\frac{5}{222222}.\frac{4}{111111}\right)\)

=\(10101.\left(\frac{5}{111111}+\frac{20}{24691308642}\right)\)

=\(10101.\frac{1111130}{24691308642}\)

=0,4545........

Ta có : (ghi đầu bài)

           =10101*(5/111111+5/222222-4/111111)

           =10101*5/111111+10101*5/222222-10101*4/111111 (nhân phân phối)

           =5/11+5/22-4/11

           =10/22+5/22-8/22

           =7/22

Chúc May MẮn