Add 20/70 and 21/3
1st number: 20/70, 2nd number: 7 0/3
20/70 + 21/3 is 51/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 3 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
20/70 = 20 × 3/70 × 3 = 60/210 - Likewise, for the 2nd fraction, since 3 × 70 = 210,
21/3 = 21 × 70/3 × 70 = 1470/210 - Add the two like fractions:
60/210 + 1470/210 = 60 + 1470/210 = 1530/210 - 1530/210 simplified gives 51/7
- So, 20/70 + 21/3 = 51/7
In mixed form: 72/7
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