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Which point lies on both lines \(2x+5y=31\) and \(3x-y=7\)?कौन सा बिंदु दोनों रेखाओं \(2x+5y=31\) और \(3x-y=7\) पर स्थित है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: ((4,3))((4,3))
Substituting ((4,3)) gives \(2x+5y=31\) but not \(3x-y=7\); the true common point is \(\left(\frac{66}{17},\frac{79}{17}\right)\). Verify in both equations before choosing.((4,3)) रखने पर \(2x+5y=31\) और \(3x-y=9\) नहीं; सही साझा बिंदु \(\left(\frac{66}{17},\frac{79}{17}\right)\) है। सही उत्तर चुनने से पहले दोनों समीकरणों में जांच करें।
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