document.write( "Question 550867: The tens digit of a certain two digit number is 1 more than 3 times the units digit. The original number is 9 less than 3 times the number formed by interchanging the digits. Find the original number. Please help me answer this! \n" ); document.write( "

Algebra.Com's Answer #359200 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
Let $\"+a+\"$ = tens digit
\n" ); document.write( "Let $\"+b+\"$ = units digit
\n" ); document.write( "given:
\n" ); document.write( "(1) $\"+a+=+3b+%2B+1+\"$
\n" ); document.write( "(2) $\"+10a+%2B+b+=+3%2A%28+10b+%2B+a+%29+-+9+\"$
\n" ); document.write( "---------------------------
\n" ); document.write( "(2) $\"+10a+%2B+b+=+30b+%2B+3a+-+9+\"$
\n" ); document.write( "(2) $\"+7a+-+29b+=+-9+\"$
\n" ); document.write( "Substitute (1) into (2)
\n" ); document.write( "(2) $\"+7%2A%28+3b+%2B+1+%29+-+29b+=+-9+\"$
\n" ); document.write( "(2) $\"+21b+%2B+7+-+29b+=+-9+\"$
\n" ); document.write( "(2) $\"+-8b+=+-2+\"$
\n" ); document.write( "(2) $\"+b+=+1%2F4+\"$
\n" ); document.write( "Either I made a mistake, or this is
\n" ); document.write( "impossible to solve. Did you copy it right? \n" ); document.write( "

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