SOLUTION: y-x=-1 2x-y=0
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Question 51827
:
y-x=-1
2x-y=0
Answer by
checkley71(8403)
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y-x=-1 or y=x-1 then
2x-(x-1)=0 or 2x-x+1=0 or x+1=0 or x=-1
then y=-1-1 or y=-2
proof -2-(-1)=-1 or -2+1=-1 or -1=-1 & 2(-1)-(-2)=0 or -2+2=0 or 0=0