Question

a = 2  3/5 +45/7 - 4   6/7 + 24/5-22/7+4/7

 

Answer 1

= 13/5 + 45/7 - 34/7 + 24/5 - 22/7 + 4/7

= (13/5 + 24/5) + 45/7 - 34/7 - 22/7 + 4/7

= 37/5 + -1

=32/5

Answer 2

= 13/5 + 45/7 - 34/7 + 24/5 - 22/7 + 4/7

= (13/5 + 24/5) + 45/7 - 34/7 - 22/7 + 4/7

= 37/5 + -1

=32/5

ai tích mình mình sẽ tích lại

Answer 3

ket qua cuoi cung 32/5