Add 3/21 and 56/45, Solve 3/21 + 1 11/45 as a fraction

Add 3/21 and 56/45

1^st number: 3/21, 2^nd number: 1 11/45

3/21 + 56/45 is 437/315.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 45 is 315

Next, find the equivalent fraction of both fractional numbers with denominator 315
For the 1st fraction, since 21 × 15 = 315,
3/21 = 3 × 15/21 × 15 = 45/315
Likewise, for the 2nd fraction, since 45 × 7 = 315,
56/45 = 56 × 7/45 × 7 = 392/315
Add the two like fractions:
45/315 + 392/315 = 45 + 392/315 = 437/315
So, 3/21 + 56/45 = 437/315
In mixed form: 1122/315

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