document.write( "Question 1071877: { y=3x x+2y=-21. Sovle the system by by substitution. Enter your answer as an ordered pair, or type none or infinite. \n" ); document.write( "
Algebra.Com's Answer #686824 by MathTherapy(10552)\"\" \"About 
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\n" ); document.write( "{ y=3x x+2y=-21. Sovle the system by by substitution. Enter your answer as an ordered pair, or type none or infinite.
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Correct answer: \"highlight_green%28matrix%282%2C3%2C+x%2C+%22=%22%2C+-+3%2C+y%2C+%22=%22%2C+-+9%29%29\" \n" );
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