1)13/14-7/14=6/14
2)14/6*2/3=14/9
3)14/9-2/9=12/9=4/3
3)1/3*3/4=4. х=4
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1)13/14-7/14=6/14
2)14/6*2/3=14/9
3)14/9-2/9=12/9=4/3
3)1/3*3/4=4. х=4