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(2/3)*x+17 = (4/5)*x-8 // - (4/5)*x-8
(2/3)*x-((4/5)*x)+8+17 = 0
(2/3)*x+(-4/5)*x+8+17 = 0
25-2/15*x = 0 // - 25
-2/15*x = -25 // : -2/15
x = -25/(-2/15)
x = 375/2
x = 375/2
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