Update

Muft Shiksha™ एक 100% Free Education Portal है 🇮🇳, जिसका उद्देश्य Class 9–12 के हर विद्यार्थी तक High-Quality Education को पूरी तरह मुफ्त पहुँचाना है। 🇮🇳 हम मानते हैं कि अच्छी शिक्षा किसी student की आर्थिक स्थिति पर निर्भर नहीं होनी चाहिए। 🇮🇳 हर विद्यार्थी को वही Quality Study Material, MCQs, Quizzes, Exam Preparation, Concept-Based Learning और Bilingual Support मिलना चाहिए, जो आमतौर पर महंगी Coaching या Premium Platforms में मिलता है। Muft Shiksha™ 🇮🇳 इसी सोच के साथ बनाया गया है

Subjects
0 reads0 ratings0 helpful

What will be the solution of (5x-y=38) and (x+y=10) by elimination?

Answer and explanation

Correct answer: ( (8,2) )

The direct answer is option C: (x,y)=(8,2). Add the equations because the y terms have opposite signs: (5x-y)+(x+y)=38+10. The y terms cancel, giving 6x=48, so x=8. Substitute into x+y=10: 8+y=10, hence y=2. Check in the first equation: 5(8)-2=40-2=38; in the second: 8+2=10. Option C is correct. Option A, (6,4), gives 5(6)-4=26, not 38. Option B, (7,3), gives 35-3=32, not 38. Option D, (9,1), gives 45-1=44, not 38. Although these pairs may have sums close to the second equation, they do not satisfy both equations. The useful elimination cue is to add equations when equal variable terms have opposite signs.

Related tags

Linear EquationsEliminationMediumClass 10

Was this question useful?

No ratings yetWrite a review / Rate this question

Student Reviews

No published reviews yet.

Add Muft Shiksha to your Home Screen

In Safari, tap Share, then Add to Home Screen.