document.write( "Question 366476: How do I solve this -x-y=-1 & -x-2y=-10 \n" ); document.write( "
Algebra.Com's Answer #261159 by Jk22(389)\"\" \"About 
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-x-y=-1
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\n" ); document.write( "(1)-(2) : y = -1-(-10) = 10 - 1 = 9, and from equation 1 : x = 1-y = -8
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\n" ); document.write( "In equation 2 : 8-18 = -10
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