Add 24/21 and 21/40, Solve 1 3/21 + 21/40 as a fraction

Add 24/21 and 21/40

1^st number: 1 3/21, 2^nd number: 21/40

24/21 + 21/40 is 467/280.

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,
24/21 = 24 × 40/21 × 40 = 960/840
Likewise, for the 2nd fraction, since 40 × 21 = 840,
21/40 = 21 × 21/40 × 21 = 441/840
Add the two like fractions:
960/840 + 441/840 = 960 + 441/840 = 1401/840
1401/840 simplified gives 467/280
So, 24/21 + 21/40 = 467/280
In mixed form: 1187/280

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