document.write( "Question 384058: please help me solve theese two equations please :\r
\n" ); document.write( "\n" ); document.write( "a. x+y=4
\n" ); document.write( " 2y-x=-1\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "b.x+y=4
\n" ); document.write( " x-y=-2
\n" ); document.write( "
\n" ); document.write( "

Algebra.Com's Answer #271836 by rfer(16322)\"\" \"About 
You can put this solution on YOUR website!
2y-(-y+4)=-1
\n" ); document.write( "2y+y-4=-1
\n" ); document.write( "3y=3
\n" ); document.write( "y=1
\n" ); document.write( "---------------------
\n" ); document.write( "x+1=4
\n" ); document.write( "x=3
\n" ); document.write( "-----------------
\n" ); document.write( "1+3=4
\n" ); document.write( "2*1-3=-1
\n" ); document.write( "
\n" );