Math, asked by xireanlu, 4 hours ago


 \frac{1}{x - 1}  +  \frac{2}{x - 2}  =  \frac{3}{x - 3}
answer isnt 3/7

Answers

Answered by BrainlySpidey
85

Question:-

 \frac{1}{x - 1} + \frac{2}{x - 2} = \frac{3}{x - 3}

Answer:-

 \frac{1}{x - 1} + \frac{2}{x - 2} = \frac{3}{x - 3}  \\   \frac{x - 2 + 2(x - 1)}{(x - 1)(x - 2) }  =  \frac{3}{x - 3}  \\   \frac{2x + x - 2 - 2}{(x - 1)(x - 2)}  =  \frac{3}{x - 3}  \\ (x - 3)(3x - 4) = 3(x  - 1)(x - 2) \\  {3x}^{2}  - 13x + 12 =  {3}( {x}^{2}  - 3x + 2) \\   {3x}^{2}  - 13x + 12 =  {3x}^{2}  - 9x + 6 \\  - 13x + 12 =  - 9x + 6 \\ 13x - 12 = 9x - 6 \\ 13x - 9x = 12 - 6 \\ 4x = 6 \\ x =  \frac{6}{4}  \\ x =  \frac{3}{2} .

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