1) (1/4 - 2/3) (4/5 - 2/15) (-3/5)= (-2/12 - 8/15) (12/15 - 2/15) (-3/5)= (-8/12 - 8/15) (10/15) (-3/5)= (-16/12 - 8/15) 10/15 (-3/5)= (-64/60) 10/15 (-3/5)= -64/60 2/3 (-3/5)= -32/90 (-3/5)= 32/90 3/5= 96/450= 16/75
2) (1/6 - 5/9) (1/2 - 3/7)= (-3/18 - 10/18) (7/14 - 6/14)= (-13/18) * (1/14)= -13/252
1) (1/4 - 2/3) (4/5 - 2/15) (-3/5)
= (-2/12 - 8/15) (12/15 - 2/15) (-3/5)
= (-8/12 - 8/15) (10/15) (-3/5)
= (-16/12 - 8/15) 10/15 (-3/5)
= (-64/60) 10/15 (-3/5)
= -64/60 2/3 (-3/5)
= -32/90 (-3/5)
= 32/90 3/5
= 96/450
= 16/75
2) (1/6 - 5/9) (1/2 - 3/7)
= (-3/18 - 10/18) (7/14 - 6/14)
= (-13/18) * (1/14)
= -13/252