document.write( "Question 739847: The measure of an angle is 4y°. Find the measure of its supplement
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Algebra.Com's Answer #451357 by jim_thompson5910(35256)\"\" \"About 
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Let x = supplment of angle 4y\r
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\n" ); document.write( "\n" ); document.write( "The two angles must add to 180 since they are supplements, so\r
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\n" ); document.write( "\n" ); document.write( "x+4y = 180\r
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\n" ); document.write( "\n" ); document.write( "x+4y-4y = 180-4y\r
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\n" ); document.write( "\n" ); document.write( "x+0y = 180-4y\r
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\n" ); document.write( "\n" ); document.write( "x+0 = 180-4y\r
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\n" ); document.write( "\n" ); document.write( "x = 180-4y\r
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\n" ); document.write( "\n" ); document.write( "x = -4y + 180\r
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\n" ); document.write( "\n" ); document.write( "So the final answer is -4y + 180
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