Add 25/15 and 40/7, Solve 1 10/15 + 5 5/7 as a fraction

Add 25/15 and 40/7

1^st number: 1 10/15, 2^nd number: 5 5/7

25/15 + 40/7 is 155/21.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 7 is 105

Next, find the equivalent fraction of both fractional numbers with denominator 105
For the 1st fraction, since 15 × 7 = 105,
25/15 = 25 × 7/15 × 7 = 175/105
Likewise, for the 2nd fraction, since 7 × 15 = 105,
40/7 = 40 × 15/7 × 15 = 600/105
Add the two like fractions:
175/105 + 600/105 = 175 + 600/105 = 775/105
775/105 simplified gives 155/21
So, 25/15 + 40/7 = 155/21
In mixed form: 78/21

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