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(1/4)*x+(1/9)*x+(1/4)*x = 37/18 // - 37/18
(1/4)*x+(1/9)*x+(1/4)*x-(37/18) = 0
(1/4)*x+(1/9)*x+(1/4)*x-37/18 = 0
11/18*x-37/18 = 0 // + 37/18
11/18*x = 37/18 // : 11/18
x = 37/18/11/18
x = 37/11
x = 37/11
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