document.write( "Question 172337: How large is an angle whose supplement contains 12 degrees less than three times its complement? \n" ); document.write( "

Algebra.Com's Answer #127280 by Mathtut(3670) $\"\"$ $\"About$

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lets call a the angle in question and the supplement s and the complement c
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\n" ); document.write( "a+s=180....lets rewrite this in terms of s--->s=180-a remember s is the supp
\n" ); document.write( "a+c=90.....lets rewrite this in terms of c--->c=90-a..remember c is the comp
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\n" ); document.write( "s=3c-12......now plug the value for s and c into this equation.
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\n" ); document.write( "180-a=3(90-a)-12
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\n" ); document.write( "180-a=270-3a-12
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\n" ); document.write( "2a=78
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\n" ); document.write( " $\"highlight%28a=39%29\"$ degrees \n" ); document.write( "

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