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(1/5)*x+5 = 19-((1/2)*x) // - 19-((1/2)*x)
(1/5)*x+(1/2)*x-19+5 = 0
7/10*x-14 = 0 // + 14
7/10*x = 14 // : 7/10
x = 14/7/10
x = 20
x = 20
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