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m in (-oo:+oo)
(1/5)*(m+12) = 32 // - 32
(1/5)*(m+12)-32 = 0
1/5*(m+12)-32 = 0
1/5*(m+12)-32 = 0
1/5*m-148/5 = 0
1/5*m-148/5 = 0
1/5*m-148/5 = 0 // + 148/5
1/5*m = 148/5 // : 1/5
m = 148/5/1/5
m = 148
m = 148
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