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m in (-oo:+oo)
(4/5)*m+2 = 16 // - 16
(4/5)*m-16+2 = 0
4/5*m-14 = 0 // + 14
4/5*m = 14 // : 4/5
m = 14/4/5
m = 35/2
m = 35/2
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