Add 70/21 and 56/60, Solve 3 7/21 + 56/60 as a fraction

Add 70/21 and 56/60

1^st number: 3 7/21, 2^nd number: 56/60

70/21 + 56/60 is 64/15.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 60 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 21 × 20 = 420,
70/21 = 70 × 20/21 × 20 = 1400/420
Likewise, for the 2nd fraction, since 60 × 7 = 420,
56/60 = 56 × 7/60 × 7 = 392/420
Add the two like fractions:
1400/420 + 392/420 = 1400 + 392/420 = 1792/420
1792/420 simplified gives 64/15
So, 70/21 + 56/60 = 64/15
In mixed form: 44/15

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