document.write( "Question 1065513: The sum of 3 numbers is 78, the third 4 more than the second, the first is two less than twice the second \n" ); document.write( "
Algebra.Com's Answer #680663 by Edwin McCravy(20060)\"\" \"About 
You can put this solution on YOUR website!
The sum of 3 numbers is 78,
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document.write( "Let the 1st number = x\r\n" );
document.write( "Let the 2nd number = y\r\n" );
document.write( "Let the 3rd number = z\r\n" );
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document.write( "x + y + z = 78\r\n" );
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\n" ); document.write( "the third 4 more than the second,
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document.write( "z = y + 4\r\n" );
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\n" ); document.write( "the first is two less than twice the second
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document.write( "x = 2y - 2\r\n" );
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document.write( "Substitute (2y - 2) for x, and (y + 4) for z in x + y + z = 78\r\n" );
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document.write( "(2y - 2) + y + (y + 4) = 78\r\n" );
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document.write( "Solve that for y, then substitute what you get for y in\r\n" );
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document.write( "x = 2y - 2 to find x, and in z = y + 4 to find z.\r\n" );
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document.write( "If you have trouble, ask me in the thank-you note form below\r\n" );
document.write( "and I'll get back to you by email.  No charge ever.\r\n" );
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document.write( "Edwin
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