If (6x+5y=64) and (6x-2y=29), what is the value of (x-y)?यदि (6x+5y=64) और (6x-2y=29), तो (x-y) का मान क्या है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (x-y=\frac{5}{2})(x-y=\frac{5}{2})
Subtracting the second equation from the first gives (7y=35), so (y=5). Then (x=\frac{15}{2}), hence (x-y=\frac{5}{2}).पहले समीकरण से दूसरा घटाने पर (7y=35), इसलिए (y=5)। फिर (x=\frac{15}{2}), अतः (x-y=\frac{5}{2})।
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