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A number consists of two digits whose sum is 8 if 18 is added to that number its digits get interchanged find the number |
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Answer» LET the no be 10x+y A. To. Q x+y=8-------------(1) 10x+y+18=10y+x 9x-9y=-18 x-y=-2---------------(2) EQ(1) +eq(2) 2x=6 x=3 Put x=3 in eq 1 y=5 So no is 35 |
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