document.write( "Question 1057037: solve the system of equations using elimination. all work must be shown please help.\r
\n" ); document.write( "\n" ); document.write( " x+9=28 -5x+8y=19 \n" ); document.write( "
Algebra.Com's Answer #672125 by rothauserc(4718)\"\" \"About 
You can put this solution on YOUR website!
1) x + 9y = 28 (Note I think you meant 9y)
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\n" ); document.write( "2) -5x + 8y = 19
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\n" ); document.write( "solve equation 1) for x
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\n" ); document.write( "x = 28 - 9y
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\n" ); document.write( "substitute for x in equation 2)
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\n" ); document.write( "-5(28 - 9y) + 8y = 19
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\n" ); document.write( "-140 + 45y + 8y = 19
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\n" ); document.write( "53y = 159
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\n" ); document.write( "y = 3
\n" ); document.write( "x = 28 - 9(3) = 1
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\n" ); document.write( "x = 1 and y = 3
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\n" ); document.write( "check the answer by substituting for x and y in equation 2)
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\n" ); document.write( "-5(1) + 8(3) = 19
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\n" ); document.write( "-5 + 24 = 19
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\n" ); document.write( "19 = 19
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\n" ); document.write( "our answer checks
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