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2-((3/7)*x) = x/4-(15/2) // - x/4-(15/2)
15/2-((3/7)*x)-(x/4)+2 = 0
(-3/7)*x-(x/4)+15/2+2 = 0
19/2-19/28*x = 0 // - 19/2
-19/28*x = -19/2 // : -19/28
x = -19/2/(-19/28)
x = 14
x = 14
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