document.write( "Question 102032: Find three consecutive integers such that twice the least integer is 12 more than the greatest integer.\r
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document.write( "2x = x + 12
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document.write( " x = 12\r
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document.write( "Dont know what to do from here.\r
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document.write( "Thanks, K.R. \n" );
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Algebra.Com's Answer #74171 by bucky(2189)![]() ![]() ![]() You can put this solution on YOUR website! Let's start by defining the three consecutive integers. \n" ); document.write( ". \n" ); document.write( "If x represents the least of the three, then the next consecutive integer is x+1 and the \n" ); document.write( "next consecutive integer is 1 more than that ... or x + 2 \n" ); document.write( ". \n" ); document.write( "So the three consecutive integers are x, x+1, and x+2. \n" ); document.write( ". \n" ); document.write( "Twice the least integer is, as you correctly wrote, 2x. \n" ); document.write( ". \n" ); document.write( "12 more than the greatest integer is x+2 + 12 = x + 14 \n" ); document.write( ". \n" ); document.write( "Since these two amounts must be equal, you can write: \n" ); document.write( ". \n" ); document.write( "2x = x + 14 \n" ); document.write( ". \n" ); document.write( "Now you need to get rid of the x on the right side so that you end up with all the terms \n" ); document.write( "containing x on one side of the equation and everything else on the other side. You can \n" ); document.write( "get rid of the x on the right side by subtracting x from the right side. But if you subtract \n" ); document.write( "something from the right side, you must also subtract it from the left side to keep the \n" ); document.write( "equation in balance. So subtract x from both sides. When you do that, the x disappears \n" ); document.write( "from the right side and the left side becomes 2x minus x which is just x. \n" ); document.write( ". \n" ); document.write( "So the equation is reduced to: \n" ); document.write( ". \n" ); document.write( "x = 14 \n" ); document.write( ". \n" ); document.write( "If x is 14 then the next two consecutive integers are 15 and 16 ... x+1 and x+2. So the \n" ); document.write( "three consecutive integers are 14, 15, and 16. \n" ); document.write( ". \n" ); document.write( "Check ... the least integer is 14. Twice the least integer is 28. Is 28 actually 12 more \n" ); document.write( "than the greatest integer which is 16? Yes it is, so the problem checks. \n" ); document.write( ". \n" ); document.write( "You were on the right track, but you just needed to know the difference in the three integers \n" ); document.write( "was that they were x, x+1, and x+2. Hope this helps to show you how you could work the \n" ); document.write( "problem through to get the final answer. \n" ); document.write( ". \n" ); document.write( " \n" ); document.write( " |