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x in (-oo:+oo)
-7*x-(1/3) = -106/3 // + -106/3
-7*x-(1/3)-(-106/3) = 0
106/3-7*x-1/3 = 0
35-7*x = 0 // - 35
-7*x = -35 // : -7
x = -35/(-7)
x = 5
x = 5
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