Add 1/25 and 81/21, Solve 1/25 + 3 18/21 as a fraction

Add 1/25 and 81/21

1^st number: 1/25, 2^nd number: 3 18/21

1/25 + 81/21 is 682/175.

Find the least common denominator or LCM of the two denominators:
LCM of 25 and 21 is 525

Next, find the equivalent fraction of both fractional numbers with denominator 525
For the 1st fraction, since 25 × 21 = 525,
1/25 = 1 × 21/25 × 21 = 21/525
Likewise, for the 2nd fraction, since 21 × 25 = 525,
81/21 = 81 × 25/21 × 25 = 2025/525
Add the two like fractions:
21/525 + 2025/525 = 21 + 2025/525 = 2046/525
2046/525 simplified gives 682/175
So, 1/25 + 81/21 = 682/175
In mixed form: 3157/175

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