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x in (-oo:+oo)
(2*x+1)/3+16 = 3*x // - 3*x
(2*x+1)/3-(3*x)+16 = 0
(2*x+1)/3-3*x+16 = 0
(2*x+1)/3+(-3*3*x)/3+(3*16)/3 = 0
2*x-3*3*x+3*16+1 = 0
1-7*x+48 = 0
49-7*x = 0
(49-7*x)/3 = 0
(49-7*x)/3 = 0 // * 3
49-7*x = 0
49-7*x = 0 // - 49
-7*x = -49 // : -7
x = -49/(-7)
x = 7
x = 7
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