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Mathematics

If 2x+35=25x+32x + \dfrac{3}{5} = \dfrac{2}{5}x + 3, then the value of x is

  1. 1

  2. 32\dfrac{3}{2}

  3. 2

  4. 52\dfrac{5}{2}

Linear Eqns One Variable

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Answer

We have:

=2x+35=25x+32x25x=33510x2x5=15358x5=125[Since the denominators are same, we cancel them]8x=12x=128x=32\phantom{=} 2x + \dfrac{3}{5} = \dfrac{2}{5}x + 3 \\[1em] \Rightarrow 2x - \dfrac{2}{5}x = 3 - \dfrac{3}{5} \\[1em] \Rightarrow \dfrac{10x - 2x}{5} = \dfrac{15 - 3}{5} \\[1em] \Rightarrow \dfrac{8x}{5} = \dfrac{12}{5} \quad \text{[Since the denominators are same, we cancel them]} \\[1em] \Rightarrow 8x = 12 \\[1em] \Rightarrow x = \dfrac{12}{8} \\[1em] \Rightarrow x = \dfrac{3}{2}

Hence, option 2 is the correct option.

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