Question

Determinati numerele x,y si z direct propozitionale cu numerele 3,4 si 6 stiind ca z-y+x=10

Answer 1

x/3=y/4=z/6=k
x/3=k, x=3k
y/4=k, y = 4k
z/6 = k, z = 6k
z-y+x = 10
6k-4k+3k = 10
5k = 10
k = 10:5
k = 2
x = 3k = 3*2 = 6
y = 4k = 4*2 = 8
z = 6k = 6*2 = 12
V: 12-8+6 = 4+6 = 10