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m in (-oo:+oo)
-149/35 = (4/5)*m-(3*m)-3 // - (4/5)*m-(3*m)-3
3*m-((4/5)*m)-149/35+3 = 0
(-4/5)*m+3*m-149/35+3 = 0
11/5*m-44/35 = 0 // + 44/35
11/5*m = 44/35 // : 11/5
m = 44/35/11/5
m = 4/7
m = 4/7
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