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7/2-(x/8) = (7*x)/4-(1/4) // - (7*x)/4-(1/4)
7/2-(x/8)-((7*x)/4)+1/4 = 0
(-7/4)*x-(x/8)+7/2+1/4 = 0
15/4-15/8*x = 0 // - 15/4
-15/8*x = -15/4 // : -15/8
x = -15/4/(-15/8)
x = 2
x = 2
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