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Daca a x ( b + c ) = 6000, a x c = 4000, iar b = 10, atunci 303 x a = ?
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Răspuns :

CameliaIgnat
a×(b+c)=6000⇒a×b+a×c=6000⇒a×b+4000=6000⇒a×b=6000-4000⇒a×b=2000.
a×b=2000;b=10⇒a=2000:10=200⇒303×a=303×200=60600

Eby
a(10+c)=6000        
ab+ac=6000
ab+4000=6000 
ab=2000 
a=2000/10
a=200
303x200=60600

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