Question

Plz answer my question it is very urgent plz I will chose the brainlist also plz help me plz I want the answer of the following question plz help me
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Answer 1

Step-by-step explanation:

$\frac{1}{(a + b + c)} = \frac{1}{a} + \frac{1}{b} + \frac{1}{c} \\ \\ \frac{1}{(a + b + c)} - \frac{1}{x} = \frac{1}{a} + \frac{1}{b} \\ \\ \frac{x - (a + b + c)}{x(a + b + c)} = \frac{b + a}{ab} \\ \\ \frac{ - (a + b)}{x(a + b + x)} = \frac{(a + b)}{ab} \\ \\ \frac{ - 1}{x(a + b + x)} = \frac{1}{ab} \\ \\ x(a + b + x) = - ab \: \: (by \: cross \: multiplication) \\ \\ {x}^{2} + ax + bx + ab = 0 \\ \\ x(x + a) + b(x + a) = 0 \\ \\ (x + a)(x + b) = 0 \\ \\ \\ \\ \\ \\ \\ x + a = 0 \\ x = - a \\ \\ \\ \\ \\ x + b = 0 \\ x = - b$

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