Add 21/5 and 63/14, Solve 4 1/5 + 4 7/14 as a fraction

Add 21/5 and 63/14

1^st number: 4 1/5, 2^nd number: 4 7/14

21/5 + 63/14 is 87/10.

Find the least common denominator or LCM of the two denominators:
LCM of 5 and 14 is 70

Next, find the equivalent fraction of both fractional numbers with denominator 70
For the 1st fraction, since 5 × 14 = 70,
21/5 = 21 × 14/5 × 14 = 294/70
Likewise, for the 2nd fraction, since 14 × 5 = 70,
63/14 = 63 × 5/14 × 5 = 315/70
Add the two like fractions:
294/70 + 315/70 = 294 + 315/70 = 609/70
609/70 simplified gives 87/10
So, 21/5 + 63/14 = 87/10
In mixed form: 87/10

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