1) 1/2+1/2= a) 0,5 b) 2 c) 1 d) 3 2) 2/3+1/5= a) 10/15+3/15=13/15 b) 3/8 c) 2/15 d) 10/15+3/15=15/15=1 3) 3/9+2/8= a) 5/17 b) 22 c) 1/3+1/4=4/12+3/12=8/12 d) 1/3+1/4=4/12+3/12=7/12 4) 7/9+8/3= a) 56/12 b) 21/27+72/27=93/27=3/12/27 c) 15/12=1/3/12=1/1/4=1,25 d) 1/6 5) 2/5+6/7= a) 14/35+30/35=44/35=1/9/35 b) 8/12=2/3 c) 12/35 d) 4/2/7

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