document.write( "Question 355156: if measure of angle A equals 3x+42, measure of angle B=6x+18, angle A and angle C are supplementary, and angle B and angle C are supplementary find x
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Algebra.Com's Answer #253707 by ewatrrr(24785)\"\" \"About 
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Hi,
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\n" ); document.write( "Given:
\n" ); document.write( "angle A and angle C are supplementary,
\n" ); document.write( "and angle B and angle C are supplementary
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\n" ); document.write( "Definition of supplements
\n" ); document.write( "A + C = 180
\n" ); document.write( "B + C = 180
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\n" ); document.write( "Transitive Property of Equality
\n" ); document.write( "A + C = B + C
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\n" ); document.write( "Subtraction Property of Equality
\n" ); document.write( "A + C - C = B + C - C
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\n" ); document.write( "Remaining from Above
\n" ); document.write( "Conclusion:
\n" ); document.write( "A = B
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\n" ); document.write( "A= 3x+42 and B=6x+18
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\n" ); document.write( "3x + 42 = 6x + 18
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\n" ); document.write( "simpliy and solve
\n" ); document.write( "24 = 3x
\n" ); document.write( "8 = x
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\n" ); document.write( "x = 8 degrees
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\n" ); document.write( "check your answer
\n" ); document.write( "24 + 42 = 48 + 18 = 66 \n" ); document.write( "
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