-5/14-3/7= -5/14-3x2/7x2= -5/14- 6/14= -11/14
2/9-5/27= 2x3/9x3- 5/27 = 6/27-5/27= 1/27
-3/20 - 2/5 = -3/20 - 2x4/5x4 = 3/20- 8/20 = -5/20
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-5/14-3/7= -5/14-3x2/7x2= -5/14- 6/14= -11/14
2/9-5/27= 2x3/9x3- 5/27 = 6/27-5/27= 1/27
-3/20 - 2/5 = -3/20 - 2x4/5x4 = 3/20- 8/20 = -5/20