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14*((3*y)/2-(7/2)) = 1 // - 1
14*((3*y)/2-(7/2))-1 = 0
14*((3*y)/2-7/2)-1 = 0
14*(3/2*y-7/2)-1 = 0
14*(3/2*y-7/2)-1 = 0
21*y-50 = 0
21*y-50 = 0
21*y-50 = 0 // + 50
21*y = 50 // : 21
y = 50/21
y = 50/21
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