Add 20/12 and 6/21, Solve 1 8/12 + 6/21 as a fraction

Add 20/12 and 6/21

1^st number: 1 8/12, 2^nd number: 6/21

20/12 + 6/21 is 41/21.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 21 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 12 × 7 = 84,
20/12 = 20 × 7/12 × 7 = 140/84
Likewise, for the 2nd fraction, since 21 × 4 = 84,
6/21 = 6 × 4/21 × 4 = 24/84
Add the two like fractions:
140/84 + 24/84 = 140 + 24/84 = 164/84
164/84 simplified gives 41/21
So, 20/12 + 6/21 = 41/21
In mixed form: 120/21

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