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70 - 1 = 69
90 - 70 = 20
20% of 70 is 14 70 - 14 = 56
-112
100 - 30% = 100 x (1 - (30/100)) = 100 x 0.7 = 70
Times ten, minus three, times ten, minus three
71 - 1 = 70
80 - 70% = 80 x (1 - (70/100)) = 24
70 minus 64 is 6.
70 minus 24 is 46.
140 minus 70 is 70.
170 - 70 = 100
112-70= 42
-70 - 60 = -130
It is: 870-70 = 800
70 - 57 = 13
4370 minus 27 is 43.