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x in (-oo:+oo)
(-4/7)*(x-(1/4)) = 3/4 // - 3/4
(-4/7)*(x-(1/4))-(3/4) = 0
(-4/7)*(x-1/4)-3/4 = 0
-4/7*(x-1/4)-3/4 = 0
(-4/7*4*(x-1/4))/4-3/4 = 0
-4/7*4*(x-1/4)-3 = 0
-16/7*x-17/7 = 0
(-16/7*x-17/7)/4 = 0
(-16/7*x-17/7)/4 = 0 // * 4
-16/7*x-17/7 = 0
-16/7*x-17/7 = 0 // + 17/7
-16/7*x = 17/7 // : -16/7
x = 17/7/(-16/7)
x = -17/16
x = -17/16
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