Solutions by everydaycalculation.com

3/7 + 6/8 is 33/28.

1. Find the least common denominator or LCM of the two denominators:
LCM of 7 and 8 is 56

Next, find the equivalent fraction of both fractional numbers with denominator 56
2. For the 1st fraction, since 7 × 8 = 56,
3/7 = 3 × 8/7 × 8 = 24/56
3. Likewise, for the 2nd fraction, since 8 × 7 = 56,
6/8 = 6 × 7/8 × 7 = 42/56
4. Add the two like fractions:
24/56 + 42/56 = 24 + 42/56 = 66/56
5. 66/56 simplified gives 33/28
6. So, 3/7 + 6/8 = 33/28
In mixed form: 15/28

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