Question 68632
1/2-3m/4+7-4m-9-m/28
-3m/4-4m-m/28+1/2+7-9
(-3*7m-4*28m-m)/28-3/2
(-21m-112m-m)/28-3/2
-134/28-3/2
(-134-3*14)/28
(-134-42)/28
176/28
44/7