a number consists of two digits whose sum is 8.if 18 is subtracted from the number the digits interchanging their places. find the number.
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let the digits are X & Y.
X+Y=8 & (10X+Y)-18=10Y+X
X+Y =8
9X-9Y =18 X-Y =2
X=5,Y=3 NUMBER=53
X+Y=8 & (10X+Y)-18=10Y+X
X+Y =8
9X-9Y =18 X-Y =2
X=5,Y=3 NUMBER=53
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