document.write( "Question 942081: ∠A and ∠B are supplementary angles. m ∠A is 9° less than twice m ∠B. Find m ∠A and m ∠B. \n" ); document.write( "
Algebra.Com's Answer #574243 by TimothyLamb(4379)\"\" \"About 
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x = measure of angle A (degrees)
\n" ); document.write( "y = measure of angle B (degrees)
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\n" ); document.write( "x + y = 180
\n" ); document.write( "x = 2y - 9
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\n" ); document.write( "put the system of linear equations into standard form
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\n" ); document.write( "x + y = 180
\n" ); document.write( "x - 2y = -9
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\n" ); document.write( "solution:
\n" ); document.write( "x = 117
\n" ); document.write( "y = 63
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