Question

{x;y;z} d.p. {3;4;5}
x+y+z=24
Va rog. Cei care ati invatat lectia aia cu K si cu proportionalitate directa

Answer 1

{x; y; z} d.p {3; 4; 5}=>x/3=y/4=z/5=k=>x=3k; y=4k; z=5k
x+y+z=24
3k+4k+5k=24
12k=24
k=24/12
k=2=>x=6; y=8; z=10

Answer 2

x=3k
y=4k
z=5k
12k=24---->k=2
x=3*2=6
y=4*2=8
z=5*2=10