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4*x-(7/3) = 7 // - 7
4*x-(7/3)-7 = 0
4*x-7/3-7 = 0
4*x-28/3 = 0 // + 28/3
4*x = 28/3 // : 4
x = 28/3/4
x = 7/3
x = 7/3
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