1) -1/2 - 1/4 = -2/4 - 1/4 = -3/4 = -0,75
2) -5/9 - 1/3 = -5/9 - 3/9 = -8/9
3) -7/10 - 3/5 = -7/10 - 6/10 = -13/10 = -1,3
4) 16/27 - (-1/9) = 16/27 + 1/9 = 16/27 + 3/27 = 19/27
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1) -1/2 - 1/4 = -2/4 - 1/4 = -3/4 = -0,75
2) -5/9 - 1/3 = -5/9 - 3/9 = -8/9
3) -7/10 - 3/5 = -7/10 - 6/10 = -13/10 = -1,3
4) 16/27 - (-1/9) = 16/27 + 1/9 = 16/27 + 3/27 = 19/27