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daca x/5=y/6=z/7 si 2y+5z=94 aflati x, y si z​

Răspuns :

Iakabcristina2ask

Răspuns:

x/5 = y/6 = z/7 = k

x=5k

y=6k

z=7k

12k+35k=94

47k=94

k=2

x=10

y=12

z=14

x/5=y/6=z/7 =k

x= 5k

y= 6k

z= 7k

2y+5z=94

2×6k+5×7k=94

12k+35k=94

47k=94 /:47

k= 2

x= 5k= 10

y= 6k= 12

z= 7k= 14