Question

{x,y,z} d.p {2,4,5} 2x+3y+z=63

Answer 1

   x          y         z
------ = ------ = ------- = k => x=2k, y=4k, z=5k
   2         4         5

2x+3y+z=63 => 2*2k+3*4k+5k=63 =>4k+12k+5k=63 => 21k=63 => k=3

x=2k=2*3=6
y=4k=4*3=12
z=5k=5*3=15