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3*x+x+11/7+28/4 = 14 // - 14
3*x+x+11/7+28/4-14 = 0
4*x-38/7 = 0 // + 38/7
4*x = 38/7 // : 4
x = 38/7/4
x = 19/14
x = 19/14
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