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m in (-oo:+oo)
64 = 4*m+2*m+10 // - 4*m+2*m+10
64-(4*m)-(2*m)-10 = 0
64-4*m-2*m-10 = 0
54-6*m = 0 // - 54
-6*m = -54 // : -6
m = -54/(-6)
m = 9
m = 9
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