answer the following question in short in maths subject and standard 10th give me only right answer
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13. (k - 1)9 - 3k + 1 = 0
9k - 9 - 3k + 1 = 0
6k - 8 = 0
6k = 8
k = 4/3
14. ax + by + c = 0
15. sum of zeroes = - b/ a = - 3/ (-1) = 3
16. a + 4d = 37 and a + 3d = 39, on subtracting thse 2 equations, d = - 2
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this is correct..................
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