document.write( "Question 168978: 15x-10y=-5\r
\n" ); document.write( "\n" ); document.write( "15y=4+5x
\n" ); document.write( "

Algebra.Com's Answer #124647 by checkley77(12844)\"\" \"About 
You can put this solution on YOUR website!
15y=4+5x or -5x+15y=4 now multiply this equation by 3 & add them
\n" ); document.write( "15x-10y=-5
\n" ); document.write( "-15x+45y=12
\n" ); document.write( "---------------------
\n" ); document.write( "35y=7
\n" ); document.write( "y=7/35
\n" ); document.write( "y=1/5 ans.
\n" ); document.write( "15x+45*1/5=12
\n" ); document.write( "15x+9=12
\n" ); document.write( "15x=12-9
\n" ); document.write( "15x=3
\n" ); document.write( "x=3/15
\n" ); document.write( "x=1/5 ans.
\n" ); document.write( "Proof:
\n" ); document.write( "15*1/5=4-5*1/5
\n" ); document.write( "15/5=4-5/5
\n" ); document.write( "3=4-1
\n" ); document.write( "3=3\r
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );