Add 8/21 and 49/40, Solve 8/21 + 1 9/40 as a fraction

Add 8/21 and 49/40

1^st number: 8/21, 2^nd number: 1 9/40

8/21 + 49/40 is 1349/840.

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

Next, find the equivalent fraction of both fractional numbers with denominator 840
For the 1st fraction, since 21 × 40 = 840,
8/21 = 8 × 40/21 × 40 = 320/840
Likewise, for the 2nd fraction, since 40 × 21 = 840,
49/40 = 49 × 21/40 × 21 = 1029/840
Add the two like fractions:
320/840 + 1029/840 = 320 + 1029/840 = 1349/840
So, 8/21 + 49/40 = 1349/840
In mixed form: 1509/840

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