\(\left[\frac{878787}{959595}+\left(-\frac{8787}{9595}\right)\right]\times\frac{1234321}{5678765}=\left[\frac{87}{95}+\left(-\frac{87}{95}\right)\right]\times\frac{1234321}{5678765}=0\times\frac{1234321}{5678765}=0\)

\(A=\left(\frac{878787}{959595}-\frac{8787}{9595}\right).\frac{1234321}{5678765}\)

     \(=\left(\frac{87}{95}-\frac{87}{95}\right).\frac{1234321}{5678765}\)

      \(=0.\frac{1234321}{5678765}\)

      \(=0\)

\(A=\left(\frac{878787}{959595}+\frac{-8787}{9595}\right).\frac{1234321}{5678765}\)

\(=\left(\frac{87.10101}{95.10101}-\frac{87.101}{95.101}\right).\frac{1234321}{5678765}\)

\(=\left(\frac{87}{95}-\frac{87}{95}\right).\frac{1234321}{5678765}\)

= 0 

\(A=\left(\frac{87}{95}+\frac{-87}{95}\right).\frac{1234321}{5678765}\)

=>\(A=0.\frac{1234321}{5678765}\)

=>A=0

\(A=\left(\frac{878787}{959595}+-\frac{8787}{9595}\right).\frac{1234231}{5678765}\)

\(=\left(\frac{87}{95}+-\frac{87}{95}\right).\frac{1234231}{5678765}\)

\(=0.\frac{1234231}{5678765}=0\)

Ta có :

\(A=\left(\frac{878787}{959595}+\frac{-8787}{9595}\right)\)\(.\frac{1234231}{5678765}\)

\(A=\left(\frac{878787\div10101}{959595\div10101}-\frac{8787\div101}{9595\div101}\right)\)\(.\frac{1234231}{5678765}\)

\(A=\left(\frac{87}{95}-\frac{87}{95}\right)\)\(.\frac{1234231}{5678765}\)

\(A=0.\frac{1234231}{5678765}\)

\(A=0\)

Vậy A=0 .

A= \(\left(\frac{878787}{959595}+-\frac{8787}{9595}\right).\frac{1234321}{5678765}\)

A= \(\left(\frac{87}{95}+\frac{-87}{95}\right).\frac{1234321}{5678765}\)

A= \(0.\frac{1234321}{5678765}\)

A= 0

A = (878787 : 959595 - 8787 : 9595) x 1234321 : 5678765 

A = ( 878787 : 8787 - 959595 : 9595 ) x 1234321 : 5678765

A = ( 100,009901 - 100,009901 ) x 1234321 : 5678765 

A = 0 x 1234321 : 5678765

A = 0 : 5678765

A = 0

bằng 0

A=0X1234321:5678765

A=0

(878787/959595 + -8787/9595) x 1234321/5678765

=(87/95+ -87/95)x 1234321/5678765

=87+(-87)/95x 1234321/5678765

=0x1234321/5678765

=0

0,1990535229