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va rog 2 si 3 urgent

Va Rog 2 Si 3 Urgent class=

Răspuns :

3. a+b/2 =150
a/b=1/2

a+b/2 =150
a+b =300
a=300-b

a/b=1/2
300-b/b=1/2
2(300-b)=b
600-2b=b
-2b-b=-600
-3b=-600
b =600÷3
b=200

a=300-b
a=300-200
a=100