Ответ:
12 1/5+2 5/10=61/5+25/10=122+25/10=147/10=14,7
7/12+4/36=21+4/36=25/36
15/27-1/9=5/9-1/9=4/9
11/14-1/7=11-2/14=9/14
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Ответ:
12 1/5+2 5/10=61/5+25/10=122+25/10=147/10=14,7
7/12+4/36=21+4/36=25/36
15/27-1/9=5/9-1/9=4/9
11/14-1/7=11-2/14=9/14