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m in (-oo:+oo)
2/3-(4*m) = -130/3 // + -130/3
2/3-(4*m)-(-130/3) = 0
2/3-4*m+130/3 = 0
44-4*m = 0 // - 44
-4*m = -44 // : -4
m = -44/(-4)
m = 11
m = 11
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