Add 54/40 and 25/42, Solve 1 14/40 + 25/42 as a fraction

Add 54/40 and 25/42

1^st number: 1 14/40, 2^nd number: 25/42

54/40 + 25/42 is 817/420.

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

Next, find the equivalent fraction of both fractional numbers with denominator 840
For the 1st fraction, since 40 × 21 = 840,
54/40 = 54 × 21/40 × 21 = 1134/840
Likewise, for the 2nd fraction, since 42 × 20 = 840,
25/42 = 25 × 20/42 × 20 = 500/840
Add the two like fractions:
1134/840 + 500/840 = 1134 + 500/840 = 1634/840
1634/840 simplified gives 817/420
So, 54/40 + 25/42 = 817/420
In mixed form: 1397/420

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