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(1/15)*(13*y-3)+(1/15)*(6*y+16) = 0
1/15*(13*y-3)+1/15*(6*y+16) = 0
1/15*(13*y-3)+1/15*(6*y+16) = 0
19/15*y+13/15 = 0
19/15*y+13/15 = 0
19/15*y+13/15 = 0 // - 13/15
19/15*y = -13/15 // : 19/15
y = -13/15/19/15
y = -13/19
y = -13/19
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