Add 25/30 and 28/21, Solve 25/30 + 1 7/21 as a fraction

Add 25/30 and 28/21

1^st number: 25/30, 2^nd number: 1 7/21

25/30 + 28/21 is 13/6.

Find the least common denominator or LCM of the two denominators:
LCM of 30 and 21 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 30 × 7 = 210,
25/30 = 25 × 7/30 × 7 = 175/210
Likewise, for the 2nd fraction, since 21 × 10 = 210,
28/21 = 28 × 10/21 × 10 = 280/210
Add the two like fractions:
175/210 + 280/210 = 175 + 280/210 = 455/210
455/210 simplified gives 13/6
So, 25/30 + 28/21 = 13/6
In mixed form: 21/6

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