Question

gaseste x, y, z daca x*2,5=y*0,5=z*5 si x+y+z=78

Answer 1

Răspuns:

Explicație pas cu pas:

x·2,5=y·0,5=z·5

x/2/5=y/2=z/1/5(x+y+z)/(2/5+2+1/5)=78/(2+10+1)/5=78·5/13=6·5=30

x/2/5=30    ⇒x=30·2/5=12

y/2=30     ⇒y=60

z/1/5=30    ⇒z=30:5=6