а)7/8=6 б)6/13 - 5 в)11/13=2 г)15/19+ 1 д)5/19=1 е)5/7-6/7=19/21+9/21=9 з)1/7-2 5/76 ж)8/9+ 7 и)5/9=6/7+5/7=5 н)3/8-3 =7 т)9/17+8 8/17=9 п)3/13-8 9/13=1 ф)6/11-7/11=
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а)7/8=6 б)6/13 - 5 в)11/13=2 г)15/19+ 1 д)5/19=1 е)5/7-6/7=19/21+9/21=9 з)1/7-2 5/76 ж)8/9+ 7 и)5/9=6/7+5/7=5 н)3/8-3 =7 т)9/17+8 8/17=9 п)3/13-8 9/13=1 ф)6/11-7/11=