Răspuns:
Explicație pas cu pas:
a)
K= factor de proportionalitate
a,b,c -numerele
-
a=3K
b=4K
c=6K
3K+4K+6K= 1.001
13K=1.001
K= 1.001 :13
K= 77
-
a= 3K=3*77=231
b=4K=4*77=308
c= 6K=6*77=462
-
b)
a=2K
b=5K
c=6K
d= 7K
2K+5K+6K+7K=80
20K=80
k=80:20
K=4
-
a= 2K=2*4=8
b=5*K=5*4=20
c=6*K=6*4=24
d=7*K= 7*4=28