30=7k-3k+10

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Solution for 30=7k-3k+10 equation: 


k in (-oo:+oo)

30 = 7*k-(3*k)+10 // - 7*k-(3*k)+10

3*k-(7*k)-10+30 = 0

3*k-7*k-10+30 = 0

20-4*k = 0 // - 20

-4*k = -20 // : -4

k = -20/(-4)

k = 5

k = 5

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