InterviewSolution
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Using the sutra Shunyam Samyaschahye, Solve the equation:1. 1/(x + 4) + 1/(x - 6) = 02. 5/(3x + 2) + 5/(2x + 8) = 03. (2x + 4)/(2x + 1) = (2x + 1)/(2x + 4)4. (3x + 2)/(5x + 7) = (x + 1)/(3x - 1) |
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Answer» 1. 1/(x + 4) + 1/(x - 6) = 0 Here Numerator of two fractions are same = 1, So According to formula : x + 4 + x- 6 = 0 ⇒ 2x – 2 = 0 ⇒ 2x = ⇒ x = 1 2. 5/(3x + 2) + 5/(2x + 8) = 0 Here, Numerator of two fractions are same = 5, So according to formula : 3x + 2 + 2x + 8 = 0 ⇒ 3x + 2x + 2 + 8 = 0 ⇒ 5x + 10 = 0 ⇒ 5x = -10 ⇒ x = -2 3. (2x + 4)/(2x + 1) = (2x + 1)/(2x + 4) Sum of numerators of both sides = 2x + 4 + 2x + 1 = 4x + 5 Sum of denominators in both sides = 2x + 1 + 2x + 4 = 4x + 5 Two sums are equal, so by the formula 4x + 5 = 0 ⇒ 4x = -5 ⇒ x = -5/4 4. (3x + 2)/(5x + 7) = (x + 1)/(3x - 1) Sum of numerators of two sides = 3x + 2 + x + 1 = 4x + 3 …..(i) Sum of denominators of two sides = 5x + 7 + 3x – 1 = 8x + 6 …(ii) Ratio of (i) and (ii) is 1 : 2. So, by formula, equation any sum equal to zero, 4x + 3 = 0 ⇒ 4x = – 3 ⇒ x = - 3/4 |
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