Add 81/20 and 12/7, Solve 4 1/20 + 1 5/7 as a fraction

Add 81/20 and 12/7

1^st number: 4 1/20, 2^nd number: 1 5/7

81/20 + 12/7 is 807/140.

Find the least common denominator or LCM of the two denominators:
LCM of 20 and 7 is 140

Next, find the equivalent fraction of both fractional numbers with denominator 140
For the 1st fraction, since 20 × 7 = 140,
81/20 = 81 × 7/20 × 7 = 567/140
Likewise, for the 2nd fraction, since 7 × 20 = 140,
12/7 = 12 × 20/7 × 20 = 240/140
Add the two like fractions:
567/140 + 240/140 = 567 + 240/140 = 807/140
So, 81/20 + 12/7 = 807/140
In mixed form: 5107/140

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