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(4/7)*x+2/3 = 94/231 // - 94/231
(4/7)*x+2/3-(94/231) = 0
(4/7)*x+2/3-94/231 = 0
4/7*x+20/77 = 0 // - 20/77
4/7*x = -20/77 // : 4/7
x = -20/77/4/7
x = -5/11
x = -5/11
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