Răspunsuri

2014-07-03T15:03:40+03:00
Ab+ac=2/15 + 11/75

a(b+c)= 2/15 +11/75   aducem la acelasi numitor

a(b+c)=  (10+11)/75=  21/75=  7/25
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2014-07-03T15:04:50+03:00
A(b+c)=ab+ac= 2/15 + 11/75 = (2*5 +11 ) /75= 21/75= 7/25