document.write( "Question 76959: Solve the system by substitution.
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document.write( " x + 3y = –8
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document.write( " 5x + 2y = 12
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Algebra.Com's Answer #55210 by checkley75(3666)![]() ![]() ![]() You can put this solution on YOUR website! X+3Y=-8, X=-3Y-8 NOW SUBSTITUTE (-3Y-8) FOR X & SOLVE FOR Y IN THE SECOND EQUATION. \n" ); document.write( "5(-3Y-8)+2Y=12 \n" ); document.write( "-15Y-40+2Y=12 \n" ); document.write( "-13Y=12+40 \n" ); document.write( "-13Y=52 \n" ); document.write( "Y=52/-13 \n" ); document.write( "Y=-4 ANSWER. \n" ); document.write( "X+3*-4=-8 \n" ); document.write( "X-12=-8 \n" ); document.write( "X=-8+12 \n" ); document.write( "X=4 ANSWER. \n" ); document.write( " |