Question

Determinați numerele x,y,z știind că ​

Answer 1

Răspuns:

a) x / 2 = y / 11 = z / 7 si x + y + z = 80 . (x + y + z) / 2 + 11 + 7 = 80/20 = 4

x = 8

y = 44

z = 28

b) x / 6 = y / 7 = z / 8 si x+y z = 20

(x + y + z) / 6 + 7 + 8 = 20/21

x = 120/21 = 40/7

y = 140/21 = 20/3

z = 160/21

c) x / 5 = y / 3 = z / 7 si x+y+ - z = 192 . (x + y + z) / 5 + 3 + 7 = 192/15 = 64/5

x = 64

y = 192/5

z = 448/5

d) x / 14 = y / 11 = z / 12 si x+y+z =39 .

x = 546/37

y = 429/37

z = 468/37

(x + y + z) / 14 + 11 + 12 = 39/37