Add 2/20 and 40/21, Solve 2/20 + 1 19/21 as a fraction

Add 2/20 and 40/21

1^st number: 2/20, 2^nd number: 1 19/21

2/20 + 40/21 is 421/210.

Find the least common denominator or LCM of the two denominators:
LCM of 20 and 21 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 20 × 21 = 420,
2/20 = 2 × 21/20 × 21 = 42/420
Likewise, for the 2nd fraction, since 21 × 20 = 420,
40/21 = 40 × 20/21 × 20 = 800/420
Add the two like fractions:
42/420 + 800/420 = 42 + 800/420 = 842/420
842/420 simplified gives 421/210
So, 2/20 + 40/21 = 421/210
In mixed form: 21/210

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