Afla numarul necunoscut din epresiile:
e) 36-42 :e : (15 :3-4 :1 ) - 20=10
f) 11-(7 x 5 - 9 x 9 : f : 3 ) : 8 =7
g) 22 - 5 x ( 38 - 4 x g ) =12
h) 26 + ( 6 x h - 7 x 3 ) : 9 =27
Urgent foarte repede dau coroana
Răspunsuri la întrebare
2016-10-01 00:47:21
36-42 :e : (15 :3-4 :1 ) - 20=10 36-42:e:(5-4)-20 = 10 42:e:1 = 36-20-10 42:e = 6 e = 42:6 e = 7 11-(7 x 5 - 9 x 9 : f : 3 ) : 8 =7 (7 x 5 - 9 x 9 : f : 3 ) : 8 = 11-7 (35-81:f:3):8 = 4 35-81:f:3 = 4×8 35-81:f:3 = 32 81:f:3 = 35-32 81:f:3 = 3 81:f = 3×3 81:f = 9 f = 81:9 f = 9 22 - 5 x ( 38 - 4 x g ) =12 5×(38-4×g) = 22-12 5×(38-4×g) = 10 38-4×g = 10:5 38-4×g = 2 4×g = 38-2 4×g = 36 g = 36:4 g = 9 26 + ( 6 x h - 7 x 3 ) : 9 =27 (6×h-21):9 = 27-26 ( 6 x h -21 ) : 9 = 1 6×h-21 = 9×1 6×h = 9+21 6×h = 30 h = 30:6 h = 5
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