document.write( "Question 698268: If the sum of a number and -5 is reduced by 7 the result is 15 less than three times the opposite of the number find the number \n" ); document.write( "

Algebra.Com's Answer #430574 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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If the sum of a number and -5 is reduced by 7 the result is 15 less than three times the opposite of the number find the number
\n" ); document.write( ":
\n" ); document.write( "n = the number
\n" ); document.write( "-n = it's opposite
\n" ); document.write( ":
\n" ); document.write( "n + (-5) - 7 = 3(-n) - 15
\n" ); document.write( "n - 12 = -3n - 15
\n" ); document.write( "n + 3n = -15 + 12
\n" ); document.write( "4n = -3
\n" ); document.write( "n = -3/4
\n" ); document.write( "n = -.75
\n" ); document.write( ":
\n" ); document.write( "See if that works
\n" ); document.write( "-.75 - 5 - 7 = 3(.75) - 15
\n" ); document.write( "-12.75 = 2.25 - 15
\n" ); document.write( "-12.75 = -12.75 \n" ); document.write( "

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