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

Which is the correct solution of (3(x-2)<15)?

Answer and explanation

Correct answer: (x<7)

The correct answer is option A: \(x<7\). Begin with \(3(x-2)<15\). Divide both sides by 3, a positive number, so the inequality sign does not change: \(x-2<5\). Add 2 to both sides: \(x<7\). Option A is exactly this result. Option B, \(x>7\), reverses the inequality without justification. Option C, \(x<5\), forgets to add 2 after obtaining \(x-2<5\). Option D, \(x>5\), has both the wrong direction and the wrong boundary. Checking with x=6 gives \(3(6-2)=12<15\), so values below 7 work; x=7 gives 15<15, which is false, so 7 is excluded. Memory cue: dividing by a positive number keeps the sign; adding or subtracting moves the constant normally.

Related tags

Linear InequalitiesBracketSolve

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.