document.write( "Question 56254: please solve the system
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document.write( "3x+4y=-2
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document.write( "x=-2y \n" );
document.write( "
Algebra.Com's Answer #38178 by funmath(2933)![]() ![]() ![]() You can put this solution on YOUR website! Solve the system \n" ); document.write( "L1) 3x+4y=-2 \n" ); document.write( "L2) x=-2y \n" ); document.write( "Substitute -2y in for x in L1) and solve for y: \n" ); document.write( "3(-2y)+4y=-2 \n" ); document.write( "-6y+4y=-2 \n" ); document.write( "-2y=-2 \n" ); document.write( "-2y/-2=-2/-2 \n" ); document.write( "y=1 \n" ); document.write( "Substitute 1 in for y in L2): \n" ); document.write( "x=-2(1) \n" ); document.write( "x=-2 \n" ); document.write( "The solution is (x,y)=(-2,1) \n" ); document.write( "Happy Calculating!!! \n" ); document.write( " \n" ); document.write( " |