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m in (-oo:+oo)
14 = 10-((1/4)*m) // - 10-((1/4)*m)
(1/4)*m-10+14 = 0
1/4*m+4 = 0 // - 4
1/4*m = -4 // : 1/4
m = -4/1/4
m = -16
m = -16
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