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4*(7*x-(7/10)) = 203/11 // - 203/11
4*(7*x-(7/10))-(203/11) = 0
4*(7*x-7/10)-203/11 = 0
(4*11*(7*x-7/10))/11-203/11 = 0
4*11*(7*x-7/10)-203 = 0
308*x-1169/5 = 0
(308*x-1169/5)/11 = 0
(308*x-1169/5)/11 = 0 // * 11
308*x-1169/5 = 0
308*x-1169/5 = 0 // + 1169/5
308*x = 1169/5 // : 308
x = 1169/5/308
x = 167/220
x = 167/220
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