document.write( "Question 206286: solve by substitution y = -3x +19
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Algebra.Com's Answer #155867 by scott8148(6628)\"\" \"About 
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substituting ___ -3x + 19 = 2x - 1\r
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\n" ); document.write( "\n" ); document.write( "20 = 5x ___ 4 = x\r
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\n" ); document.write( "\n" ); document.write( "substituting ___ y = 2(4) - 1 = 7
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