1. What will come in place of the question mark (?) in the given questions ?$$\frac{\frac{126}{14}\times?-7\times3}{8^{2}-7\times6+20}=1$$






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  • By: anil on 05 May 2019 04.05 pm
    Expression : $$frac{frac{126}{14} imes?-7 imes3}{8^{2}-7 imes6+20}=1$$ => $$frac{9x - 21}{64 - 42 + 20} = 1$$ => $$9x - 21 = 42$$ => $$9x = 42 + 21 = 63$$ => $$x = frac{63}{9} = 7$$
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