Add 7/21 and 72/10, Solve 7/21 + 7 2/10 as a fraction

Add 7/21 and 72/10

1^st number: 7/21, 2^nd number: 7 2/10

7/21 + 72/10 is 113/15.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 10 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 21 × 10 = 210,
7/21 = 7 × 10/21 × 10 = 70/210
Likewise, for the 2nd fraction, since 10 × 21 = 210,
72/10 = 72 × 21/10 × 21 = 1512/210
Add the two like fractions:
70/210 + 1512/210 = 70 + 1512/210 = 1582/210
1582/210 simplified gives 113/15
So, 7/21 + 72/10 = 113/15
In mixed form: 78/15

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