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(3/4)*x-((5/6)*x)+3/5 = -19/60 // + -19/60
(3/4)*x-((5/6)*x)+3/5-(-19/60) = 0
(3/4)*x+(-5/6)*x+3/5+19/60 = 0
11/12-1/12*x = 0 // - 11/12
-1/12*x = -11/12 // : -1/12
x = -11/12/(-1/12)
x = 11
x = 11
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