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Vreau 10 exercitii cu adunarea si inmultirea fractiilor(cu numitori diferiti!)
Va rog!!!


Răspuns :

2/5x3/6=2x5/3x6=10/18

2/5+3/6=(2x6+3x5)/30=27/30

2/8+3/6+5/3=(2x3+3x4+5x8)/24=58/24

(2/3+5/6)x3/8=[(2x2+5)/6]x3/8=9/6x3/8=27/48

s.a.m.d compune dupa modelul dat
2/3x5/2=10/6 3/2x4/3=12/6 4/5x1/2=4/10 4/2x5/3=20/6 10/2x4/3=40/6 5/6x7/8=35/48 40/11x2/3=80/33 6/2x7/9=42/18 1/2x5/6=5/12