document.write( "Question 424291: solve each system of equations using the substitution method 5x+6y=-75x-3y=146 \n" ); document.write( "
Algebra.Com's Answer #295831 by mananth(16946)\"\" \"About 
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5x+6y=-75x-3y=146\r
\n" ); document.write( "\n" ); document.write( "You should separate the equations with a colon
\n" ); document.write( "5x+6y=-75 : x-3y=146\r
\n" ); document.write( "\n" ); document.write( "5x+6y=-75.............1
\n" ); document.write( "-3y=146 -1x
\n" ); document.write( "/-3
\n" ); document.write( "y=-48.67-0.33x
\n" ); document.write( "Plug the value of y in (1)
\n" ); document.write( "5x+6(-48.67+0.33 x)=-75
\n" ); document.write( "5x-292+2 x)=-75
\n" ); document.write( "5x+2x=-75+292
\n" ); document.write( "7x=217
\n" ); document.write( "/7
\n" ); document.write( "x=31
\n" ); document.write( "Plug the value of x in (1)
\n" ); document.write( "5x+6y=-75
\n" ); document.write( "5*31+6y =-75
\n" ); document.write( "155+6y=-75
\n" ); document.write( "6y=-230
\n" ); document.write( "/6
\n" ); document.write( "y=-38.33
\n" ); document.write( "CHECK
\n" ); document.write( "-3y=146 -1x
\n" ); document.write( "115=146 -31
\n" ); document.write( " \n" ); document.write( "
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