3(-7x+1)=255

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Solution for 3(-7x+1)=255 equation: 


x in (-oo:+oo)

3*(1-7*x) = 255 // - 255

3*(1-7*x)-255 = 0

3*(1-7*x)-255 = 0

-21*x-252 = 0

-21*x-252 = 0

-21*x-252 = 0 // + 252

-21*x = 252 // : -21

x = 252/(-21)

x = -12

x = -12

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