Add 12/10 and 7/21, Solve 1 2/10 + 7/21 as a fraction

Add 12/10 and 7/21

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

12/10 + 7/21 is 23/15.

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

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 10 × 21 = 210,
12/10 = 12 × 21/10 × 21 = 252/210
Likewise, for the 2nd fraction, since 21 × 10 = 210,
7/21 = 7 × 10/21 × 10 = 70/210
Add the two like fractions:
252/210 + 70/210 = 252 + 70/210 = 322/210
322/210 simplified gives 23/15
So, 12/10 + 7/21 = 23/15
In mixed form: 18/15

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