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

Add 12/10 and 1/21

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

12/10 + 1/21 is 131/105.

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,
1/21 = 1 × 10/21 × 10 = 10/210
Add the two like fractions:
252/210 + 10/210 = 252 + 10/210 = 262/210
262/210 simplified gives 131/105
So, 12/10 + 1/21 = 131/105
In mixed form: 126/105

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