document.write( "Question 330010: The sum of three numbers is -48 the first is 12 more than the second number, and the third number is 20 less than twice the second number find the three numbers \n" ); document.write( "

Algebra.Com's Answer #236471 by stanbon(75887) $\"\"$ $\"About$

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The sum of three numbers is -48
\n" ); document.write( "x + y + z = -48
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\n" ); document.write( "the first is 12 more than the second number
\n" ); document.write( "x = y+12
\n" ); document.write( "-------------------
\n" ); document.write( "the third number is 20 less than twice the second number
\n" ); document.write( "z = 2y-20
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\n" ); document.write( "find the three numbers
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\n" ); document.write( "Substitute for x and z and solve for \"y\":
\n" ); document.write( "y+12 + y + 2y-20 = -48
\n" ); document.write( "-----
\n" ); document.write( "4y - 8 = -48
\n" ); document.write( "4y = -40
\n" ); document.write( "y = -10
\n" ); document.write( "-------------------------------
\n" ); document.write( "Since x = y+12, x = 2
\n" ); document.write( "---
\n" ); document.write( "Since z = 2y-20 = -40
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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