Why it's 10y +x - 10x - y after the equation 1?
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9y-9x=9(y-x)
importanly i think the question is incomplete
then also I am trying
if it is = zero
then. 9(y-x)=0
y-x=0
y=x
importanly i think the question is incomplete
then also I am trying
if it is = zero
then. 9(y-x)=0
y-x=0
y=x
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