Add 12/21 and 75/7, Solve 12/21 + 10 5/7 as a fraction

Add 12/21 and 75/7

1^st number: 12/21, 2^nd number: 10 5/7

12/21 + 75/7 is 79/7.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 7 is 21

Next, find the equivalent fraction of both fractional numbers with denominator 21
For the 1st fraction, since 21 × 1 = 21,
12/21 = 12 × 1/21 × 1 = 12/21
Likewise, for the 2nd fraction, since 7 × 3 = 21,
75/7 = 75 × 3/7 × 3 = 225/21
Add the two like fractions:
12/21 + 225/21 = 12 + 225/21 = 237/21
237/21 simplified gives 79/7
So, 12/21 + 75/7 = 79/7
In mixed form: 112/7

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