Finding the Unknown
CBSE · Class 7 · Mathematics
Flashcards for Finding the Unknown — CBSE Class 7 Mathematics. Quick Q&A cards covering key concepts, definitions, and formulas.
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What is an equation?
Answer
An equation is a statement of equality between two algebraic expressions. It uses the equal sign to show that both sides have the same value. Example: 3x + 4 = 7.
समीकरण क्या है?
Answer
समीकरण दो बीजगणितीय व्यंजकों के बीच समानता का कथन है। यह बराबर चिह्न का उपयोग करके दिखाता है कि दोनों पक्षों का मान समान है। उदाहरण: 3x + 4 = 7.
किसी समीकरण को हल करने का क्या मतलब है?
Answer
किसी समीकरण को हल करने का अर्थ है अक्षर-संख्या का वह मान ज्ञात करना जो बाएँ पक्ष और दाएँ पक्ष को बराबर कर दे। उत्तर वह मान है जो समानता को संतुष्ट करता है।…
What does solving an equation mean?
Answer
Solving an equation means finding the value of the letter-number that makes the left-hand side and the right-hand side equal. The answer is the value that satisfies the equality.
Why does adding or subtracting the same number on both sides keep an equation balanced?
Answer
Because both sides of an equation always have the same value. If the same number is added or subtracted on both sides, the equality is not changed. This is like removing equal weights from both sides …
दोनों तरफ एक ही संख्या जोड़ने या घटाने से समीकरण संतुलित क्यों रहता है?
Answer
क्योंकि एक समीकरण के दोनों तरफ का मान हमेशा समान होता है। यदि दोनों तरफ एक ही संख्या को जोड़ा या घटाया जाए तो समानता नहीं बदलती। यह एक संतुलित तराजू के दोनों तरफ से समान भार हटाने जैसा है।…
दोनों तरफ एक ही संख्या को गुणा या भाग करने से समीकरण संतुलित क्यों रहता है?
Answer
क्योंकि दोनों तरफ एक ही संक्रिया करने पर दोनों पक्ष बराबर रह जाते हैं। यदि एक पक्ष से कोई गुणनखंड हटा दिया जाय तो दूसरे पक्ष को उस गुणनखंड से भाग देना होगा। यदि कोई भाजक हटा दिया जाय तो दूसरे पक्ष को …
Why does multiplying or dividing the same number on both sides keep an equation balanced?
Answer
Because the two sides stay equal when the same operation is done to both sides. If a factor is removed from one side, the other side must be divided by that factor. If a divisor is removed, the other …
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
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