X-3y=0
3x-2y=5
------------------
x=3y
3.3y-2y=5
-----------------
x=3y
9y-2y=5
-----------------
x=3y
7y=5
-----------------
x=3y
y=5/7
-----------------
x=3.5/7
y=5/7
-----------------
x=15/7
y=5/7
-----------------
/x,y/=/15/7,5/7/
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