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