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
1 reads0 ratings0 helpful

If (3x+2y=16) and (3x-y=7), what is the value of (y)?

Answer and explanation

Correct answer: (y=3)

When two linear equations contain the same term with the same coefficient, subtraction can eliminate that term. This is the elimination method. Removing one variable leaves a simple equation in the other variable. After finding that variable, the result can be substituted back if the value of the second variable is also needed. Careful subtraction of every term is essential, including the signs on the right-hand sides.

The equations are 
m 3x+2y=16
m and 
m 3x-y=7
m. Subtract the second equation from the first: 
m (3x+2y)-(3x-y)=16-7
m. The 
m 3x
m terms cancel, and 
m 2y-(-y)=3y
m, so 
m 3y=9
m. Dividing by 3 gives 
m y=3
m. Therefore option C is correct. The other choices do not satisfy the difference between the two equations.

Related tags

Linear EquationsEliminationValue Of YEasyClass 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.