Add 84/12 and 20/70
1st number: 7 0/12, 2nd number: 20/70
84/12 + 20/70 is 51/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 70 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 12 × 35 = 420,
84/12 = 84 × 35/12 × 35 = 2940/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
20/70 = 20 × 6/70 × 6 = 120/420 - Add the two like fractions:
2940/420 + 120/420 = 2940 + 120/420 = 3060/420 - 3060/420 simplified gives 51/7
- So, 84/12 + 20/70 = 51/7
In mixed form: 72/7
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