Add 3/9 and 81/70, Solve 3/9 + 1 11/70 as a fraction

Add 3/9 and 81/70

1^st number: 3/9, 2^nd number: 1 11/70

3/9 + 81/70 is 313/210.

Find the least common denominator or LCM of the two denominators:
LCM of 9 and 70 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 9 × 70 = 630,
3/9 = 3 × 70/9 × 70 = 210/630
Likewise, for the 2nd fraction, since 70 × 9 = 630,
81/70 = 81 × 9/70 × 9 = 729/630
Add the two like fractions:
210/630 + 729/630 = 210 + 729/630 = 939/630
939/630 simplified gives 313/210
So, 3/9 + 81/70 = 313/210
In mixed form: 1103/210

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