Add 8/45 and 21/12, Solve 8/45 + 1 9/12 as a fraction

Add 8/45 and 21/12

1^st number: 8/45, 2^nd number: 1 9/12

8/45 + 21/12 is 347/180.

Find the least common denominator or LCM of the two denominators:
LCM of 45 and 12 is 180

Next, find the equivalent fraction of both fractional numbers with denominator 180
For the 1st fraction, since 45 × 4 = 180,
8/45 = 8 × 4/45 × 4 = 32/180
Likewise, for the 2nd fraction, since 12 × 15 = 180,
21/12 = 21 × 15/12 × 15 = 315/180
Add the two like fractions:
32/180 + 315/180 = 32 + 315/180 = 347/180
So, 8/45 + 21/12 = 347/180
In mixed form: 1167/180

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