Răspunsuri

2014-08-28T16:55:24+03:00
A) 7/12 + 1/24=  (14+1)/24=  15/24= 5/8

b)1/18 + 7/36 +11/72= (4+14+11)/72= 29/72

c)1/28 + 7/72 +1/84= (54+147+18)/1512=  219/1512=  73/504

d)7/120 +11/240 + 1/400= (70+55+3)/1200= 128/1200= 64/600= 8/75
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