It is: 2 and 1/8 subtract 1 and 7/8 = 1/4
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You can either subtract the whole number portions, then subtract the numerators, or you can convert the mixed numbers to improper fractions, subtract the numerators, and simplify. For example, 3 5/7 - 2 1/7 can be handled as 3 - 2 and 5/7 - 1/7, or as 26/7 - 15/7; either way, it's 1 4/7.
By converting them to equivalent fractions with a common denominator. 1/5 = 7/35 1/7 = 5/35 1/5 - 1/7 = 2/35
2 - 1/8 = 1 + 1 - 1/8 = 1 + (1-1/8) = 1 + 7/8 or 17/8
7 times 6 is 42. If you subtract two, you get 42-2= 40.
Subtract is to take away a certain portion of a number. For example, if you subtract 5 from 7 (7-5), you take off 5 parts of 7, and get 2 as your answer.