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(1/4)*x+3/7 = 2*x-233/28 // - 2*x-233/28
(1/4)*x-(2*x)+3/7-(-233/28) = 0
(1/4)*x-2*x+3/7+233/28 = 0
35/4-7/4*x = 0 // - 35/4
-7/4*x = -35/4 // : -7/4
x = -35/4/(-7/4)
x = 5
x = 5
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