Calculati folosind proprietatile adunarii Ex 8

Calculati Folosind Proprietatile Adunarii Ex 8 class=

Răspuns :

4/15 + 11/15+9/10+41/10= 15/15+50/10 =1+5=6
17/16+15/16+12/13+14/13= 32/16+26/13= 2+2=4
5/8+3/8+1/8+7/18+11/18= 9/8+18/18= 9/8+ 1 =9/8+8/8= 17/8
8/14+5/14+1/14+1/3+2/3= 14/14+3/3= 1+1=2