Add 7/21 and 5/70
7/21 + 5/70 is 17/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
7/21 = 7 × 10/21 × 10 = 70/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
5/70 = 5 × 3/70 × 3 = 15/210 - Add the two like fractions:
70/210 + 15/210 = 70 + 15/210 = 85/210 - 85/210 simplified gives 17/42
- So, 7/21 + 5/70 = 17/42
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