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(7/8*2 intregi 2/3+3 intregi 1/3*2 intregi 1/10)*6/28

Răspuns :

(7/8*2 intregi 2/3+3 intregi 1/3*2 intregi 1/10)*6/28=
=
(7/8*8/3+10/3*21/10)*6/28=
=(7/3+21/3)*3/14=
=28/3*3/14=
=2