Add 7/21 and 70/18, Solve 7/21 + 3 16/18 as a fraction

Add 7/21 and 70/18

1^st number: 7/21, 2^nd number: 3 16/18

7/21 + 70/18 is 38/9.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 18 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 21 × 6 = 126,
7/21 = 7 × 6/21 × 6 = 42/126
Likewise, for the 2nd fraction, since 18 × 7 = 126,
70/18 = 70 × 7/18 × 7 = 490/126
Add the two like fractions:
42/126 + 490/126 = 42 + 490/126 = 532/126
532/126 simplified gives 38/9
So, 7/21 + 70/18 = 38/9
In mixed form: 42/9

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