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Question

23x=38x+712


Solution

We have:23x=38x+71223x38x=712        (Transposing 38x to LHS)2×83×324x=71216924x=712724x=712x=71121×24271x=2CHECK:  Substituting x=2 in the given equation, we get:LHS=23x          =23×2        =43RHS=38x+712         =38×2+712         =68+712         =6×3+7×224         =18+1424         =324243           =43  ∴ LHS=RHS      Hence, x=2 is a solution of the given equation.   

Mathematics
RS Aggarwal (2017)
Standard VII

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