3(-7k+5)=-90

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Solution for 3(-7k+5)=-90 equation: 


k in (-oo:+oo)

3*(5-7*k) = -90 // + 90

3*(5-7*k)+90 = 0

3*(5-7*k)+90 = 0

105-21*k = 0

105-21*k = 0

105-21*k = 0 // - 105

-21*k = -105 // : -21

k = -105/(-21)

k = 5

k = 5

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