Add 12/7 and 20/40
1st number: 1 5/7, 2nd number: 20/40
12/7 + 20/40 is 31/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 7 × 40 = 280,
12/7 = 12 × 40/7 × 40 = 480/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
20/40 = 20 × 7/40 × 7 = 140/280 - Add the two like fractions:
480/280 + 140/280 = 480 + 140/280 = 620/280 - 620/280 simplified gives 31/14
- So, 12/7 + 20/40 = 31/14
In mixed form: 23/14
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