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Converting to twentieths, we get 8 over 20 minus 15 over 20, resulting in minus 7 over 20.
1 over 2
it is 2 over 4
2 − 1/3 = 12/3
3 1/2
9/10 − 2/3 = 7/30
14
2/3-2/3=0
2 and 1/12 minus 1 and 1/3 = 3/4 or 0.75
-3/8
2 and 3/8
2-1/3= 1/3 or .33 repeating
(2^5)/2 - (2^(3/2)) = 12