plzz solve this both questions
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let the number be 10x+y
7(10x+y)=3(10y+x)
70x+7y=30y+3x
70x-3x=30y-7y
67x=23y
7(10x+y)=3(10y+x)
70x+7y=30y+3x
70x-3x=30y-7y
67x=23y
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