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a in (-oo:+oo)
(2*(a+4))/5 = 14 // - 14
(2*(a+4))/5-14 = 0
(2*(a+4))/5+(-14*5)/5 = 0
2*(a+4)-14*5 = 0
2*a-62 = 0
(2*a-62)/5 = 0
(2*a-62)/5 = 0 // * 5
2*a-62 = 0
2*a-62 = 0 // + 62
2*a = 62 // : 2
a = 62/2
a = 31
a = 31
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