Add 12/9 and 9/70, Solve 1 3/9 + 9/70 as a fraction

Add 12/9 and 9/70

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

12/9 + 9/70 is 307/210.

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,
12/9 = 12 × 70/9 × 70 = 840/630
Likewise, for the 2nd fraction, since 70 × 9 = 630,
9/70 = 9 × 9/70 × 9 = 81/630
Add the two like fractions:
840/630 + 81/630 = 840 + 81/630 = 921/630
921/630 simplified gives 307/210
So, 12/9 + 9/70 = 307/210
In mixed form: 197/210

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