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(3-(4*x))/5+7 = 0
(3-4*x)/5+7 = 0
(3-4*x)/5+(5*7)/5 = 0
5*7-4*x+3 = 0
38-4*x = 0
(38-4*x)/5 = 0
(38-4*x)/5 = 0 // * 5
38-4*x = 0
38-4*x = 0 // - 38
-4*x = -38 // : -4
x = -38/(-4)
x = 19/2
x = 19/2
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