Yes, that looks good.
That's 180 degrees plus every multiple of 360 degrees more.
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2k + 17 = 32k = -14k = -7
5k
(2k + 3) (2k + 3)
Well, honey, if you want to solve for k, just isolate the variable by subtracting 3 from both sides of the equation. That leaves you with 2k equals 8. Then, divide both sides by 2 to find that k equals 4. Math doesn't have to be a headache, darling.
35 + 2k = 9k subtract 2k from each side 35 + 2k - 2k = 9k - 2k 35 = 7k divide both sides integers by 7 35/7 = (7/7)k 5 = k check in original equation 35 + 2(5) = 9(5) 35 + 10 = 45 45 = 45 checks out