Solutions by everydaycalculation.com

28 - 910 is -1320.

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

LCM of 8 and 10 is**40**

Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 8 × 5 = 40,

28 = 2 × 58 × 5 = 1040 - Likewise, for the 2nd fraction, since 10 × 4 = 40,

910 = 9 × 410 × 4 = 3640 - Subtract the two like fractions:

1040 - 3640 = 10 - 3640 = -2640 - After reducing the fraction, the answer is -1320

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