Add 20/12 and 40/70
1st number: 1 8/12, 2nd number: 40/70
20/12 + 40/70 is 47/21.
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,
20/12 = 20 × 35/12 × 35 = 700/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
40/70 = 40 × 6/70 × 6 = 240/420 - Add the two like fractions:
700/420 + 240/420 = 700 + 240/420 = 940/420 - 940/420 simplified gives 47/21
- So, 20/12 + 40/70 = 47/21
In mixed form: 25/21
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