Add 21/7 and 25/18, Solve 3 0/7 + 1 7/18 as a fraction

Add 21/7 and 25/18

1^st number: 3 0/7, 2^nd number: 1 7/18

21/7 + 25/18 is 79/18.

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 18 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 7 × 18 = 126,
21/7 = 21 × 18/7 × 18 = 378/126
Likewise, for the 2nd fraction, since 18 × 7 = 126,
25/18 = 25 × 7/18 × 7 = 175/126
Add the two like fractions:
378/126 + 175/126 = 378 + 175/126 = 553/126
553/126 simplified gives 79/18
So, 21/7 + 25/18 = 79/18
In mixed form: 47/18

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