3. If = −1, y = 2 is a solution of the equation 2x + 5y = k, then find the value of k.
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☯️Given
➡️ x = -1
➡️ y = 2
☯️Finding value of k
2x + 5y = k
(2× -1) + (5×2) = k
-2 + 10 = k
8 = k
⚛️So, the value of k is 8.
hope it will help you.
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