Ответ:
2/12=1/6
a+b=9
a-b=1/6
a=b+1/6
b+1/6+b=9
2b=9-1/6
2b=53/6
b=53/12
a=53/12+2/12=55/12
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Ответ:
2/12=1/6
a+b=9
a-b=1/6
a=b+1/6
b+1/6+b=9
2b=9-1/6
2b=53/6
b=53/12
a=53/12+2/12=55/12