Add 7/70 and 7/21
7/70 + 7/21 is 13/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
7/70 = 7 × 3/70 × 3 = 21/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
7/21 = 7 × 10/21 × 10 = 70/210 - Add the two like fractions:
21/210 + 70/210 = 21 + 70/210 = 91/210 - 91/210 simplified gives 13/30
- So, 7/70 + 7/21 = 13/30
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