Add 21/70 and 42/25, Solve 21/70 + 1 17/25 as a fraction

Add 21/70 and 42/25

1^st number: 21/70, 2^nd number: 1 17/25

21/70 + 42/25 is 99/50.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 25 is 350

Next, find the equivalent fraction of both fractional numbers with denominator 350
For the 1st fraction, since 70 × 5 = 350,
21/70 = 21 × 5/70 × 5 = 105/350
Likewise, for the 2nd fraction, since 25 × 14 = 350,
42/25 = 42 × 14/25 × 14 = 588/350
Add the two like fractions:
105/350 + 588/350 = 105 + 588/350 = 693/350
693/350 simplified gives 99/50
So, 21/70 + 42/25 = 99/50
In mixed form: 149/50

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