document.write( "Question 495969: A= 4x+20; B=3x
\n" ); document.write( "If A is the supplement of the complement of B, solve for x.
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Algebra.Com's Answer #336273 by nerdybill(7384)\"\" \"About 
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A= 4x+20; B=3x
\n" ); document.write( "If A is the supplement of the complement of B, solve for x.
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\n" ); document.write( "\"complement of B\" = 90-3x
\n" ); document.write( "\"supplement of the complement of B\" = 180-(90-3x) = 90+3x
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\n" ); document.write( "4x+20 = 90+3x
\n" ); document.write( "4x = 70+3x
\n" ); document.write( "x = 70 degrees
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