Add 72/42 and 25/40, Solve 1 30/42 + 25/40 as a fraction

Add 72/42 and 25/40

1^st number: 1 30/42, 2^nd number: 25/40

72/42 + 25/40 is 131/56.

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,
72/42 = 72 × 20/42 × 20 = 1440/840
Likewise, for the 2nd fraction, since 40 × 21 = 840,
25/40 = 25 × 21/40 × 21 = 525/840
Add the two like fractions:
1440/840 + 525/840 = 1440 + 525/840 = 1965/840
1965/840 simplified gives 131/56
So, 72/42 + 25/40 = 131/56
In mixed form: 219/56

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