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If 6x + 5y = 64 and 3x − 5y = −4, what is the value of y?यदि 6x + 5y = 64 और 3x − 5y = −4, तो y का मान क्या है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: 24/524/5
Adding the equations gives 9x = 60, so x = 20/3. Substituting this into 3x − 5y = −4 gives 20 − 5y = −4, so −5y = −24 and y = 24/5.दोनों समीकरण जोड़ने पर 9x = 60, इसलिए x = 20/3। इसे 3x − 5y = −4 में रखने पर 20 − 5y = −4, अतः −5y = −24 और y = 24/5।
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