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m in (-oo:+oo)
3*m-(2/5) = 4-(m/3) // - 4-(m/3)
3*m+m/3-(2/5)-4 = 0
3*m+m/3-2/5-4 = 0
10/3*m-22/5 = 0 // + 22/5
10/3*m = 22/5 // : 10/3
m = 22/5/10/3
m = 33/25
m = 33/25
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