document.write( "Question 210146: A and B are complementary Find A = 3x-7 and B = 11x-1 \n" ); document.write( "
Algebra.Com's Answer #158792 by jim_thompson5910(35256)\"\" \"About 
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If \"A and B are complementary\", then \"A%2BB=90\". \r
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\n" ); document.write( "\n" ); document.write( "\"A%2BB=90\" Start with the given equation.\r
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\n" ); document.write( "\n" ); document.write( "\"3x-7%2B11x-1=90\" Plug in \"A+=+3x-7\" and \"B+=+11x-1\"\r
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\n" ); document.write( "\n" ); document.write( "\"14x-8=90\" Combine like terms on the left side.\r
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\n" ); document.write( "\n" ); document.write( "\"14x=90%2B8\" Add \"8\" to both sides.\r
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\n" ); document.write( "\n" ); document.write( "\"14x=98\" Combine like terms on the right side.\r
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\n" ); document.write( "\n" ); document.write( "\"x=%2898%29%2F%2814%29\" Divide both sides by \"14\" to isolate \"x\".\r
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\n" ); document.write( "\n" ); document.write( "\"x=7\" Reduce.\r
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\n" ); document.write( "\n" ); document.write( "Answer:\r
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\n" ); document.write( "\n" ); document.write( "So the solution is \"x=7\" \r
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\n" ); document.write( "\n" ); document.write( "So \"A=3%287%29-7=21-7=14\" degrees and \"B=11%287%29-1=77-1=76\" degrees
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