9x/7-x-(x-28)/21=o

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Solution for 9x/7-x-(x-28)/21=o equation: 


x in (-oo:+oo)

(9*x)/7-((x-28)/21)-x = o // - o

(9*x)/7-((x-28)/21)-o-x = 0

(-1*(x-28))/21-o+(9*x)/7-x = 0

(-1*7*(x-28))/(7*21)+(7*21*(-o))/(7*21)+(9*21*x)/(7*21)+(7*21*(-x))/(7*21) = 0

7*21*(-o)-1*7*(x-28)+9*21*x+7*21*(-x) = 0

189*x-147*o-7*x-147*x+196 = 0

182*x-147*o-147*x+196 = 0

35*x-147*o+196 = 0

(35*x-147*o+196)/(7*21) = 0

(35*x-147*o+196)/(7*21) = 0 // * 7*21

35*x-147*o+196 = 0

35*x-147*o+196 = 0 // - 196-147*o

35*x = -(196-147*o) // : 35

x = (-(196-147*o))/35

x = (-(196-147*o))/35

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