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(7/3)*x+4 = (1/3)*x+1/3 // - (1/3)*x+1/3
(7/3)*x-((1/3)*x)-(1/3)+4 = 0
(7/3)*x+(-1/3)*x-1/3+4 = 0
2*x+11/3 = 0 // - 11/3
2*x = -11/3 // : 2
x = -11/3/2
x = -11/6
x = -11/6
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