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

Add 30/21 and 7/70

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

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

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

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

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