cos(53)=x/7

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Solution for cos(53)=x/7 equation: 


x in (-oo:+oo)

cos(53) = x/7 // - x/7

cos(53)-(x/7) = 0

cos(53)-1/7*x = 0 // - cos(53)

-1/7*x = -cos(53) // : -1/7

x = -cos(53)/(-1/7)

x = 7*cos(53)

x = 7*cos(53)

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