document.write( "Question 1068117: A pair of vertical angles have measures (2z+43)° and (−10z+25)° .\r
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Algebra.Com's Answer #683281 by Boreal(15235)\"\" \"About 
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They are equal
\n" ); document.write( "2z+43=-10z+25; add 10z to both sides
\n" ); document.write( "12z=-18, subtracting 43 from both sides
\n" ); document.write( "z=-1.5
\n" ); document.write( "-3+43=15+25
\n" ); document.write( "They both equal 40 to check
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