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m in (-oo:+oo)
107 = 6*m+3*m+8 // - 6*m+3*m+8
107-(6*m)-(3*m)-8 = 0
107-6*m-3*m-8 = 0
99-9*m = 0 // - 99
-9*m = -99 // : -9
m = -99/(-9)
m = 11
m = 11
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