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(1/7)*(8*x-9) = (x+9)/14 // - (x+9)/14
(1/7)*(8*x-9)-((x+9)/14) = 0
1/7*(8*x-9)+(-1*(x+9))/14 = 0
(1/7*14*(8*x-9))/14+(-1*(x+9))/14 = 0
1/7*14*(8*x-9)-1*(x+9) = 0
15*x-27 = 0
(15*x-27)/14 = 0
(15*x-27)/14 = 0 // * 14
15*x-27 = 0
15*x-27 = 0 // + 27
15*x = 27 // : 15
x = 27/15
x = 9/5
x = 9/5
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