Add 25/40 and 70/42, Solve 25/40 + 1 28/42 as a fraction

Add 25/40 and 70/42

1^st number: 25/40, 2^nd number: 1 28/42

25/40 + 70/42 is 55/24.

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,
25/40 = 25 × 21/40 × 21 = 525/840
Likewise, for the 2nd fraction, since 42 × 20 = 840,
70/42 = 70 × 20/42 × 20 = 1400/840
Add the two like fractions:
525/840 + 1400/840 = 525 + 1400/840 = 1925/840
1925/840 simplified gives 55/24
So, 25/40 + 70/42 = 55/24
In mixed form: 27/24

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