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calculati : 1 /3 + 1/5 + 2/15 ; 1/2 + 2/3 + 1/6;1/4 + 2+1/2 ;2/5 + 1/4 + 3/2; 1 1/3 + 2 + 2 1/4 ; 5+ 1 1/8 + 2 1/2 ; 2 1/4 + 5 1/3 + 1 1/6 ; 1 1/16 + 2 3/8 + 2 1/4 ; 2 1/5 + 1 + 1 1 /15; 1 2/7 + 1 1/14 + 1; va rugam ajutați mă ,mulțumesc mult

Calculati 1 3 15 215 12 23 1614 212 25 14 32 1 13 2 2 14 5 1 18 2 12 2 14 5 13 1 16 1 116 2 38 2 14 2 15 1 1 1 15 1 27 1 114 1 Va Rugam Ajutați Mă Mulțumesc Mul class=

Răspuns :

1/3+1/5+2/15=(5+3+2)/15=10/15=2/3
1/2+2/3+1/6=(3+4+1)/6=8/6=4/3
1/4+2+1/2=(1+8+2)/4=11/4
2/5+1/4+3/2=(8+5+30)/20=43/20
11/3+2+21/4=(44+24+63)/4=131/4
5+11/8+21/2=(40+11+84)/8=135/8
21/4+51/3+1=(63+204+12)/12=279/12=93/4
Am facut cateva, spune-mi daca ai inteles ca ti le scriu si pe restul imediat. Am adus totul la numitor comun si apoi le-am adunat.