Solution
Expression : $$\frac{x}{3}-[\frac{5}{2}(\frac{7x}{5}-\frac{4}{3})]=\frac{-x}{6}$$
= $$\frac{x}{3}-[\frac{5}{2}(\frac{21x-20}{15})]=\frac{-x}{6}$$
= $$\frac{10x}{30}-(\frac{105x-100}{30})=\frac{-x}{6}$$
Multiplying both sides by 30, we get :
= $$10x-105x+100=-5x$$
= $$105x-10x-5x=90x=100$$
= $$x=\frac{100}{90}=\frac{10}{9}$$
=> Ans - (A)
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