Add 40/84 and 81/40, Solve 40/84 + 2 1/40 as a fraction

Add 40/84 and 81/40

1^st number: 40/84, 2^nd number: 2 1/40

40/84 + 81/40 is 2101/840.

Find the least common denominator or LCM of the two denominators:
LCM of 84 and 40 is 840

Next, find the equivalent fraction of both fractional numbers with denominator 840
For the 1st fraction, since 84 × 10 = 840,
40/84 = 40 × 10/84 × 10 = 400/840
Likewise, for the 2nd fraction, since 40 × 21 = 840,
81/40 = 81 × 21/40 × 21 = 1701/840
Add the two like fractions:
400/840 + 1701/840 = 400 + 1701/840 = 2101/840
So, 40/84 + 81/40 = 2101/840
In mixed form: 2421/840

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