3. Subtract the following: a)1 by 2 from 1 by 7 b) 2by 21 from -21 by 2 c) -22 by 3 from 9 by 31 d) 11by 5 from 21 by 53 e) 1 by 9 from 1 by 27 f) -6 from 17 from 5 by 51
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sorry i don't know this answer very well
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hello dear i don't no sorry
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