Add 1/40 and 25/21, Solve 1/40 + 1 4/21 as a fraction

Add 1/40 and 25/21

1^st number: 1/40, 2^nd number: 1 4/21

1/40 + 25/21 is 1021/840.

Find the least common denominator or LCM of the two denominators:
LCM of 40 and 21 is 840

Next, find the equivalent fraction of both fractional numbers with denominator 840
For the 1st fraction, since 40 × 21 = 840,
1/40 = 1 × 21/40 × 21 = 21/840
Likewise, for the 2nd fraction, since 21 × 40 = 840,
25/21 = 25 × 40/21 × 40 = 1000/840
Add the two like fractions:
21/840 + 1000/840 = 21 + 1000/840 = 1021/840
So, 1/40 + 25/21 = 1021/840
In mixed form: 1181/840

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