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m in (-oo:+oo)
(-6/7)*(6*m+4) = (5/28)*m-17 // - (5/28)*m-17
(-6/7)*(6*m+4)-((5/28)*m)+17 = 0
(-6/7)*(6*m+4)+(-5/28)*m+17 = 0
(-5*m)/28-6/7*(6*m+4)+17 = 0
(-6/7*28*(6*m+4))/28+(-5*m)/28+(17*28)/28 = 0
17*28-6/7*28*(6*m+4)-5*m = 0
476-149*m-96 = 0
380-149*m = 0
(380-149*m)/28 = 0
(380-149*m)/28 = 0 // * 28
380-149*m = 0
380-149*m = 0 // - 380
-149*m = -380 // : -149
m = -380/(-149)
m = 380/149
m = 380/149
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