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(1/4)*(8*x-20) = 25*x-10 // - 25*x-10
(1/4)*(8*x-20)-(25*x)+10 = 0
(1/4)*(8*x-20)-25*x+10 = 0
1/4*(8*x-20)-25*x+10 = 0
1/4*(8*x-20)-25*x+10 = 0
10-23*x-5 = 0
5-23*x = 0
5-23*x = 0
5-23*x = 0 // - 5
-23*x = -5 // : -23
x = -5/(-23)
x = 5/23
x = 5/23
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