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a)1/2=a/4=4/b ;
b)3/5=a/10=b/100
c)a/b=c/10=d/100
d)4/10=a/b
Ce valori pot prinde a,b,c,d in cele patru expresii???


Răspuns :

a) 1/2=a/4=4/b ;
1/2=2/4=4/8   a=2; b=8
b) 3/5=a/10=b/100
    3/5=6/10=60/100
10=2x5 dublul numitorului
100=10x10
a=6; b=60
c) a/b=c/10=d/100
   1/2=5/10=50/100
d)4/10=a/b=2/5