Solutions by everydaycalculation.com

28 + 210 is 920.

- 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,

210 = 2 × 410 × 4 = 840 - Add the two like fractions:

1040 + 840 = 10 + 840 = 1840 - 18/40 simplified gives 920
- So, 2/8 + 2/10 = 9/20

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