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(2/3)*x+5/3 = (7/4)*x+31/12+1/4 // - (7/4)*x+31/12+1/4
(2/3)*x-((7/4)*x)+5/3-(31/12)-(1/4) = 0
(2/3)*x+(-7/4)*x+5/3-31/12-1/4 = 0
-13/12*x-7/6 = 0 // + 7/6
-13/12*x = 7/6 // : -13/12
x = 7/6/(-13/12)
x = -14/13
x = -14/13
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