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k in (-oo:+oo)
10-(4*k) = (1/3)*k+304/33 // - (1/3)*k+304/33
10-(4*k)-((1/3)*k)-(304/33) = 0
(-1/3)*k-4*k-304/33+10 = 0
26/33-13/3*k = 0 // - 26/33
-13/3*k = -26/33 // : -13/3
k = -26/33/(-13/3)
k = 2/11
k = 2/11
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