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(2/5)*x+5/9 = 197/225 // - 197/225
(2/5)*x+5/9-(197/225) = 0
(2/5)*x+5/9-197/225 = 0
2/5*x-8/25 = 0 // + 8/25
2/5*x = 8/25 // : 2/5
x = 8/25/2/5
x = 4/5
x = 4/5
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