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m in (-oo:+oo)
-((1/2)*m)-6 = -145/24 // + -145/24
-((1/2)*m)-(-145/24)-6 = 0
(-1/2)*m+145/24-6 = 0
1/24-1/2*m = 0 // - 1/24
-1/2*m = -1/24 // : -1/2
m = -1/24/(-1/2)
m = 1/12
m = 1/12
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