Question

tim cac so m,n,p thoa man : m+n+p+8=2canm-1 + 4cann-2 +6canp-3

tim cac so x,y,z thoa man :canx+cany-1 +canz-2 = 1/2(x+y+z)

tim cac so x,y,z thoa man :x+y+z+4=2canx-2 +4cany-3+6canz-5