Math, asked by meandonlyme7192, 10 months ago

If x/y=p/q prove 5x+7y/5x-7y=5p+7q/5p-7q

Answers

Answered by MaheswariS
5

\underline{\textbf{Given:}}

\mathsf{\dfrac{x}{y}=\dfrac{p}{q}}

\underline{\textbf{To prove:}}

\mathsf{\dfrac{5x+7y}{5x-7y}=\dfrac{5p+7q}{5p-7q}}

\underline{\textbf{Solution:}}

\mathsf{\dfrac{x}{y}=\dfrac{p}{q}=k(say)}

\implies\mathsf{\dfrac{x}{p}=\dfrac{y}{q}=k}

\implies\mathsf{x=kp\;\&\;y=kq}

\mathsf{Consider,}

\mathsf{\dfrac{5x+7y}{5x-7y}}

\mathsf{=\dfrac{5(kp)+7(kq)}{5(kp)-7(kq)}}

\mathsf{=\dfrac{5kp+7kq}{5kp-7kq}}

\mathsf{=\dfrac{k(5p+7q)}{k(5p-7q)}}

\mathsf{=\dfrac{5p+7q}{5p-7q}}

\implies\boxed{\mathsf{\dfrac{5x+7y}{5x-7y}=\dfrac{5p+7q}{5p-7q}}}

\underline{\textbf{Find more:}}

What is the answer of 64:N=8:9

https://brainly.in/question/36730035  

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