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What is the correct intersection of \(7x-y=20\) and \(x+3y=12\)?रेखाएं \(7x-y=20\) और \(x+3y=12\) का सही प्रतिच्छेद क्या है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: \(\left(\frac{36}{11},\frac{32}{11}\right)\)\(\left(\frac{36}{11},\frac{32}{11}\right)\)
Putting \(y=7x-20\) in \(x+3y=12\) gives \(22x=72\), so \(x=\frac{36}{11}\) and \(y=\frac{32}{11}\). Fractional coordinates can also be correct graphical solutions.\(y=7x-20\) को \(x+3y=12\) में रखने पर \(22x=72\), इसलिए \(x=\frac{36}{11}\) और \(y=\frac{32}{11}\)। भिन्न निर्देशांक भी सही ग्राफीय समाधान हो सकते हैं।
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