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A) [(28 x 10 + 28 x 7)]- [(28 x 10 + 28 x 5)] = (280+196)- (280+ 140)= 476-420=56 b) [(134x100 + 134 x 30 + 134 x 5)] - [(133 x 100 + 133 x 50 + 133 x 5)]= (13400+ 4020+670)-(13300+6650+665)= 18090- 20615= (-2525) na minusie;P c) [(31x10+ 31x5)] - [(62x5+ 62x2)]= (310+155) - (310+124)= 465- 434=31 d) [(12 x 10 + 12 x 3)] - [(6x20 + 6 x 6)]= (120+36)- (120+36)= 156-156=0 e) [(13 x 50 - 13 x 1)] - [(26 x 25 + 26 x 2)]= (650-13)-(650+52)= 637-702= (-65) na minusie;P f) (52x52)- [(57x50 + 57 x 5)] = 2704- (2850+285)= 2704-3135= (-431) na minusie;P
b) [(134x100 + 134 x 30 + 134 x 5)] - [(133 x 100 + 133 x 50 + 133 x 5)]= (13400+ 4020+670)-(13300+6650+665)= 18090- 20615= (-2525) na minusie;P
c) [(31x10+ 31x5)] - [(62x5+ 62x2)]= (310+155) - (310+124)= 465- 434=31
d) [(12 x 10 + 12 x 3)] - [(6x20 + 6 x 6)]= (120+36)- (120+36)= 156-156=0
e) [(13 x 50 - 13 x 1)] - [(26 x 25 + 26 x 2)]= (650-13)-(650+52)= 637-702= (-65) na minusie;P
f) (52x52)- [(57x50 + 57 x 5)] = 2704- (2850+285)= 2704-3135= (-431) na minusie;P