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(4-(2*x))/5+3 = 9 // - 9
(4-(2*x))/5-9+3 = 0
(4-2*x)/5-9+3 = 0
(4-2*x)/5+(-9*5)/5+(3*5)/5 = 0
3*5-2*x-9*5+4 = 0
15-2*x-41 = 0
-2*x-26 = 0
(-2*x-26)/5 = 0
(-2*x-26)/5 = 0 // * 5
-2*x-26 = 0
-2*x-26 = 0 // + 26
-2*x = 26 // : -2
x = 26/(-2)
x = -13
x = -13
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