Add 20/12 and 45/70
1st number: 1 8/12, 2nd number: 45/70
20/12 + 45/70 is 97/42.
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,
45/70 = 45 × 6/70 × 6 = 270/420 - Add the two like fractions:
700/420 + 270/420 = 700 + 270/420 = 970/420 - 970/420 simplified gives 97/42
- So, 20/12 + 45/70 = 97/42
In mixed form: 213/42
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