-1/4(r-2)=4

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Solution for -1/4(r-2)=4 equation: 


r in (-oo:+oo)

(-1/4)*(r-2) = 4 // - 4

(-1/4)*(r-2)-4 = 0

-1/4*(r-2)-4 = 0

-1/4*(r-2)-4 = 0

-1/4*r-7/2 = 0

-1/4*r-7/2 = 0

-1/4*r-7/2 = 0 // + 7/2

-1/4*r = 7/2 // : -1/4

r = 7/2/(-1/4)

r = -14

r = -14

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