Add 12/9 and 80/70
1st number: 1 3/9, 2nd number: 1 10/70
12/9 + 80/70 is 52/21.
Steps for adding fractions
- 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,
80/70 = 80 × 9/70 × 9 = 720/630 - Add the two like fractions:
840/630 + 720/630 = 840 + 720/630 = 1560/630 - 1560/630 simplified gives 52/21
- So, 12/9 + 80/70 = 52/21
In mixed form: 210/21
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