Solutions by everydaycalculation.com

25 - 510 is -110.

- Find the least common denominator or LCM of the two denominators:

LCM of 5 and 10 is**10**

Next, find the equivalent fraction of both fractional numbers with denominator 10 - For the 1st fraction, since 5 × 2 = 10,

25 = 2 × 25 × 2 = 410 - Likewise, for the 2nd fraction, since 10 × 1 = 10,

510 = 5 × 110 × 1 = 510 - Subtract the two like fractions:

410 - 510 = 4 - 510 = -110

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