Question

Determinati numerele a,b,c si d direct proportionale cu numerele 2,3,4 si 6, stiondc ca d-c+b-a=12
Dau coroana​

Answer 1

{a,b,c,d} d.p {2,3,4,6}=> a/2=b/3=c/4=d/6=k
a=2k b=3k c=4k d=6k
d-c+b-a=12 => 6k-4k+3k-2k=12
3k=12/:3 => k=4
a=2k=2•4=8
b=3k=3•4=12
c=4k=4•8=32
d=6k=6•8=48