document.write( "Question 469220: 1 and 2 are supplementary. If m 1 = 60° and m 2 = (2x + 20). What is the value of x? i dont understand what they are asking? \n" ); document.write( "

Algebra.Com's Answer #321929 by Tatiana_Stebko(1539) $\"\"$ $\"About$

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if angles 1 and 2 are supplementary then their sum is 180°.
\n" ); document.write( "So $\"m1%2Bm2=180\"$
\n" ); document.write( " $\"60%2B%282x%2B20%29=180\"$
\n" ); document.write( " $\"2x=180-60-20\"$
\n" ); document.write( " $\"2x=100\"$
\n" ); document.write( " $\"x=100%2F2\"$
\n" ); document.write( " $\"x=50\"$ \n" ); document.write( "

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