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x in (-oo:+oo)
(1/3)*(2*x+65) = 5*x // - 5*x
(1/3)*(2*x+65)-(5*x) = 0
(1/3)*(2*x+65)-5*x = 0
1/3*(2*x+65)-5*x = 0
1/3*(2*x+65)-5*x = 0
65/3-13/3*x = 0
65/3-13/3*x = 0
65/3-13/3*x = 0 // - 65/3
-13/3*x = -65/3 // : -13/3
x = -65/3/(-13/3)
x = 5
x = 5
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