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2x+3y = 11, 2x-4y = -24. These are linear equations in two variables m and n. Find the values of m and n.

Mathematics

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Answer

m=−1m=-1

Step-by-step solution

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यहाँ दिए गए प्रश्न 2 को हल करने के चरण दिए गए हैं:

दिए गए समीकरण हैं:

2x+3y=11(1)2x + 3y = 11 \quad (1) 2x−4y=−24(2)2x - 4y = -24 \quad (2)

और हमें y=mx+3y = mx + 3 के लिए mm का मान ज्ञात करना है।

  1. समीकरण (1) से समीकरण (2) को घटाएँ।

    (2x+3y)−(2x−4y)=11−(−24)(2x + 3y) - (2x - 4y) = 11 - (-24) 2x+3y−2x+4y=11+242x + 3y - 2x + 4y = 11 + 24 7y=357y = 35 y=357y = \frac{35}{7} y=5y = 5
  2. y=5y = 5 को समीकरण (1) में प्रतिस्थापित करें।

    2x+3(5)=112x + 3(5) = 11 2x+15=112x + 15 = 11 2x=11−152x = 11 - 15 2x=−42x = -4 x=−42x = \frac{-4}{2} x=−2x = -2

    अतः, समीकरणों का हल है x=−2x = -2 और y=5y = 5.

  3. x=−2x = -2 और y=5y = 5 को y=mx+3y = mx + 3 में प्रतिस्थापित करें।

    5=m(−2)+35 = m(-2) + 3 5=−2m+35 = -2m + 3 5−3=−2m5 - 3 = -2m 2=−2m2 = -2m m=2−2m = \frac{2}{-2} m=−1m = -1

    अतः, mm का मान है: m=−1\boxed{m=-1}

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