document.write( "Question 217254: solve the system of equations 2r+2s=50 and 2r-s=17 \n" ); document.write( "
Algebra.Com's Answer #163868 by checkley77(12844)\"\" \"About 
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2r+2s=50
\n" ); document.write( "2r-s=17 subtract
\n" ); document.write( "------------------------
\n" ); document.write( "3s=33
\n" ); document.write( "s=33/3
\n" ); document.write( "s=11 ans.
\n" ); document.write( "2r+2*11=50
\n" ); document.write( "2r+22=50
\n" ); document.write( "2r=50-22
\n" ); document.write( "2r=28
\n" ); document.write( "r=28/2
\n" ); document.write( "r=14 ans.
\n" ); document.write( "Proof:
\n" ); document.write( "2*14-11=17
\n" ); document.write( "28-11=17
\n" ); document.write( "17=17
\n" ); document.write( " \n" ); document.write( "
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