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(3/7)*(x-2)+4/5 = 0
3/7*(x-2)+4/5 = 0
(3/7*5*(x-2))/5+4/5 = 0
3/7*5*(x-2)+4 = 0
15/7*x-2/7 = 0
(15/7*x-2/7)/5 = 0
(15/7*x-2/7)/5 = 0 // * 5
15/7*x-2/7 = 0
15/7*x-2/7 = 0 // + 2/7
15/7*x = 2/7 // : 15/7
x = 2/7/15/7
x = 2/15
x = 2/15
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