Question

aflati numerele naturale x, y si z stiind ca x/6=y/7=z/8 si x+y-z=20. Repede vă rog!!!

Answer 1

Răspuns:

x/6=y/7=z/8=k

x=6k

y=7k

z=8k

x+y-z=20

6k+7k-8k=20

5k=20=>k=20:5=>k=4

x=6·4=24

y=7·4=28

z=8·4=32

Answer 2

Explicație pas cu pas:

x/6=y/7=z/8=k/1

x/6=k/1=)x=6k ;y/7=k/1=)y=7k; z/8=k/1 =) z=8k

6k+7k-8k=20

13k-8k=20

5k=20 =) k=4

x= 6×4=24

y= 7×4=28

z=8×4=32