Question

stiind ca x supra 5 egal cu y supra 3 egal cu z supra 7 si x plus 2y minus z egal cu 192, aflati x, y, z.

repede, va rog! dau coroana!​

Answer 1

Răspuns:

x/5=y/3=z/7=k

x=5k

y=3k

z=7k

x+2y-z=192

5k+6k-7k=192

4k=192=>k=192:4=>k=48

x=5·48=240

y=3·48=144

z=7·48=336