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x in (-oo:+oo)
4*x+5/(-3) = 7 // - 7
4*x+5/(-3)-7 = 0
4*x-26/3 = 0 // + 26/3
4*x = 26/3 // : 4
x = 26/3/4
x = 13/6
x = 13/6
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