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(4*y)/5-(y/4)+7/10 = 7/2 // - 7/2
(4*y)/5-(y/4)+7/10-(7/2) = 0
(4*y)/5-(y/4)+7/10-7/2 = 0
11/20*y-14/5 = 0 // + 14/5
11/20*y = 14/5 // : 11/20
y = 14/5/11/20
y = 56/11
y = 56/11
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