Add 50/42 and 21/40, Solve 1 8/42 + 21/40 as a fraction

Add 50/42 and 21/40

1^st number: 1 8/42, 2^nd number: 21/40

50/42 + 21/40 is 1441/840.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 40 is 840

Next, find the equivalent fraction of both fractional numbers with denominator 840
For the 1st fraction, since 42 × 20 = 840,
50/42 = 50 × 20/42 × 20 = 1000/840
Likewise, for the 2nd fraction, since 40 × 21 = 840,
21/40 = 21 × 21/40 × 21 = 441/840
Add the two like fractions:
1000/840 + 441/840 = 1000 + 441/840 = 1441/840
So, 50/42 + 21/40 = 1441/840
In mixed form: 1601/840

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