Add 7/70 and 30/21, Solve 7/70 + 1 9/21 as a fraction

Add 7/70 and 30/21

1^st number: 7/70, 2^nd number: 1 9/21

7/70 + 30/21 is 107/70.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 21 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 70 × 3 = 210,
7/70 = 7 × 3/70 × 3 = 21/210
Likewise, for the 2nd fraction, since 21 × 10 = 210,
30/21 = 30 × 10/21 × 10 = 300/210
Add the two like fractions:
21/210 + 300/210 = 21 + 300/210 = 321/210
321/210 simplified gives 107/70
So, 7/70 + 30/21 = 107/70
In mixed form: 137/70

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