Question

3x
$3x + 4y = 0 \\ 7x - 8y = 0$
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Answer 1

${\bigstar}\large\boxed{Hello\:Mate}{\bigstar}$

$3x+4y=0...(i)\\7x-8y=0...(ii)$

$\bigstar$ Multiply eq.(i) with 2 $\bigstar$

⇒ $(3x+4y)\times2=0\times2$

⇒ $6x+8y=0...(iii)$

$\bigstar$ Add eq.(ii) and (iii) $\bigstar$

⇒ $(7x-8y)+(6x+8y)=(0)+(0)$

⇒ $13x=0$

⇒ $x=0$

$\bigstar$ Substitute value of x in eq.(i)

⇒ $3(0)+4y=0$

⇒ $0+4y=0$

⇒ $y=0$

∴ $x=0,\:y=0$

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