In two digit number, unit place digit is x-1 and ten's place digit is x+1 then the number is ?
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According to question
unit digit will be = x-1
tens digit is = 10(x+1)
therefore
10(x+1) + x-1 = 10x + 10 + x-1
11x - 9
you have to provide RHS after that;
question will be continued...
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