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(23*x)/20+4*x-(13/15) = (7*x)/5+4*x-(5/20) // - (7*x)/5+4*x-(5/20)
(23*x)/20+4*x-((7*x)/5)-(4*x)-(13/15)+5/20 = 0
(23*x)/20+4*x+(-7/5)*x-4*x-13/15+5/20 = 0
-1/4*x-37/60 = 0 // + 37/60
-1/4*x = 37/60 // : -1/4
x = 37/60/(-1/4)
x = -37/15
x = -37/15
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