CTET 2 Math and Science Jan 2016 Paper(HM)

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Question : 49 of 150

Marks: +1, -0

यदि

3(5 x-7)-4(8 x-13)=2(9 x-11)-17

है, तो

\;{7 x-5}/{11 x-9}

का मान है

$-\;{14}/{31}$
$-\;{9}/{13}$
$\;{9}/{13}$
$\;{14}/{31}$

Solution:

3(5 x-7)-4(8 x-13)=2(9 x-11)-17

⇒ 15 x-21-32 x+52=18 x-22-17

⇒ \;\; -17 x+31=18 x-39

⇒35 x=70

⇒ x=2

∴ \;\; \;{7 x-5}/{11 x-9} \;\text " का मान "\;=\;{14-5}/{22-9}

\;\; =\;{9}/{13}

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