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m in (-oo:+oo)
(-2/7)*m+1/2 = 37/154 // - 37/154
(-2/7)*m+1/2-(37/154) = 0
(-2/7)*m+1/2-37/154 = 0
20/77-2/7*m = 0 // - 20/77
-2/7*m = -20/77 // : -2/7
m = -20/77/(-2/7)
m = 10/11
m = 10/11
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