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(78÷6×87)+[131-(29×35-278)×0]-31×2=

Răspuns :

(13x87)+[131-(1015-278)x0]-31x2

1131+131-62=1200

(13×87)+[131-(1015-278)×0]-62
1131+(131-0)-62
1131+131-62=1000-62= 9938