document.write( "Question 387429: Im thinking of a whole number. If I divide it by 12, then multiply the answer by7, then subtract 5, and then add 13, I end up with 15. What was my original number? \n" ); document.write( "
Algebra.Com's Answer #273849 by ptaylor(2198)\"\" \"About 
You can put this solution on YOUR website!
Let x=the whole #
\n" ); document.write( "Divide it by 12: x/12
\n" ); document.write( "Multiply ans by 7: 7(x/12)=7x/12
\n" ); document.write( "Then subtract 5: (7x/12)-5
\n" ); document.write( "And then add 13: ((7x/12)-5)+13
\n" ); document.write( "And the above equals 15: Sooooo
\n" ); document.write( "((7x/12)-5)+13=15 get rid of parens
\n" ); document.write( "7x/12-5+13=15 simplify
\n" ); document.write( "7x/12 +8=15 subtract 8 from each side
\n" ); document.write( "7x/12=7 multiply each side by 12
\n" ); document.write( "7x=84
\n" ); document.write( "x=12----the whole #\r
\n" ); document.write( "\n" ); document.write( "CK
\n" ); document.write( "divide by 12=12/12=1
\n" ); document.write( "Multiply by 7=7*1=7
\n" ); document.write( "Subtract 5=7-5=2
\n" ); document.write( "Add 13=13+2=15
\n" ); document.write( "15=15\r
\n" ); document.write( "\n" ); document.write( "Hope this helps-ptaylor
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