Add 70/21 and 8/30
1st number: 3 7/21, 2nd number: 8/30
70/21 + 8/30 is 18/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
70/21 = 70 × 10/21 × 10 = 700/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
8/30 = 8 × 7/30 × 7 = 56/210 - Add the two like fractions:
700/210 + 56/210 = 700 + 56/210 = 756/210 - 756/210 simplified gives 18/5
- So, 70/21 + 8/30 = 18/5
In mixed form: 33/5
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