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

If (x=14-3y) and (x+y=8), what is the value of (y)?

Answer and explanation

Correct answer: (y=3)

The first relation gives x directly in terms of y, so substitute it into the second equation. This replaces x and leaves one equation with y only. Care is needed when combining the two y terms: the expression contains \(-3y\) from the substitution and another \(+y\) from the second equation, so together they make \(-2y\).

Substitute \(x=14-3y\) into \(x+y=8\): \((14-3y)+y=8\). Simplifying gives \(14-2y=8\). Subtract 14 from both sides: \(-2y=-6\). Dividing by -2 gives \(y=3\). A check gives x=14-9=5 and \(5+3=8\). Therefore option D is correct. The negative sign must be retained throughout the calculation.

Related tags

Linear EquationsSubstitutionValue 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.