1) (-3/71/4)(-4) = (3/28)*(-4) = -3/7
2) (-4 1/51.3)10/13 = (-21/513/10)10/13 = -273/50
3) (-5 6/73/13)(-4 1/3) = (-41/73/13)(-13/3) = 41
4) -(7 5/12+7/36)5 1/7 = -(79/12+7/36)(37/7) = -(3168/36+84/36)(37/7) = -(2472/36)(37/7) = -4944/7 = -706 2/7
1) (-3/71/4)(-4) = (3/28)*(-4) = -3/7
2) (-4 1/51.3)10/13 = (-21/513/10)10/13 = -273/50
3) (-5 6/73/13)(-4 1/3) = (-41/73/13)(-13/3) = 41
4) -(7 5/12+7/36)5 1/7 = -(79/12+7/36)(37/7) = -(3168/36+84/36)(37/7) = -(2472/36)(37/7) = -4944/7 = -706 2/7