document.write( "Question 118640: Perimeter of a triangle. The perimeter of the triangle shown in the accompanying figure is 12 meters. Determine the values of x,x + 1, and x + 2 by solving the equation. x + (x + 1) + (x + 2) = 12
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Algebra.Com's Answer #86751 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
\"x%2Bx%2B1%2Bx%2B2=12\" Start with the given equation\r
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\n" ); document.write( "\n" ); document.write( "\"3x%2B3=12\" Combine like terms on the left side\r
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\n" ); document.write( "\n" ); document.write( "\"3x=12-3\"Subtract 3 from both sides\r
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\n" ); document.write( "\n" ); document.write( "\"3x=9\" Combine like terms on the right side\r
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\n" ); document.write( "\n" ); document.write( "\"x=%289%29%2F%283%29\" Divide both sides by 3 to isolate x\r
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\n" ); document.write( "\n" ); document.write( "\"x=3\" Divide\r
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\n" ); document.write( "\n" ); document.write( "Answer:\r
\n" ); document.write( "\n" ); document.write( "So our answer is \"x=3\" \r
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\n" ); document.write( "\n" ); document.write( "Now let's find the length of \"x%2B1\":\r
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\n" ); document.write( "\n" ); document.write( "\"x%2B1\" Start with the given expression\r
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\n" ); document.write( "\n" ); document.write( "\"3%2B1\" Plug in \"x=3\"\r
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\n" ); document.write( "\n" ); document.write( "\"4\" Add\r
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\n" ); document.write( "\n" ); document.write( "So \"x%2B1=4\"\r
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\n" ); document.write( "\n" ); document.write( "Now let's find the length of \"x%2B2\":\r
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\n" ); document.write( "\n" ); document.write( "\"x%2B2\" Start with the given expression\r
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\n" ); document.write( "\n" ); document.write( "\"3%2B2\" Plug in \"x=3\"\r
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\n" ); document.write( "\n" ); document.write( "\"5\" Add\r
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\n" ); document.write( "\n" ); document.write( "So \"x%2B2=5\"\r
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\n" ); document.write( "\n" ); document.write( "So the three lengths are 3,4, and 5\r
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\n" ); document.write( "\n" ); document.write( "notice if we add 3, 4, and 5 we get:\r
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\n" ); document.write( "\n" ); document.write( "3+4+5=12\r
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\n" ); document.write( "\n" ); document.write( "So this verifies our answer.
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