Question

{[(27×a-79)×61-78]×15+340}:250=4
Află valoarea lui a .
Va rog ajutatima pana maine dau puncte.

Answer 1

{[(27×a-79)×61-78]×15+340}:250=4
[(27×a-79)×61-78]×15+340 = 4 x 250
[(27×a-79)×61-78]×15+340 = 1000
[(27×a-79)×61-78]×15 = 1000-340
[(27×a-79)×61-78]×15 = 660
(27×a-79)×61-78 = 660:15
(27×a-79)×61-78 = 44
(27×a-79)×61 = 44+78
(27×a-79)×61 = 122
27×a-79 = 122:61
27×a-79 = 2
27xa = 2+79
27xa = 81
a = 81:27
a = 3

Answer 2

[(1647a-4819-78)]×15+340)):250=4

(24705a-73455+340) : 250=4

(24705a-73115) : 250=4

24705a-73115=1000

24705a=1000+73115

24705a=74115

a=74115 : 24705

a=3

Sper că te-am ajutat!