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If (i) 4x+5y=83 and (3x)/(2y)=(21)/(22) ...

If (i) `4x+5y=83` and `(3x)/(2y)=(21)/(22)` , then what is the value of `y-x` ? (ii) `x/4-(x-3)/6=1` , then find the value of `x` .

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