Add 7/10 and 21/30
7/10 + 21/30 is 7/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 10 × 3 = 30,
7/10 = 7 × 3/10 × 3 = 21/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
21/30 = 21 × 1/30 × 1 = 21/30 - Add the two like fractions:
21/30 + 21/30 = 21 + 21/30 = 42/30 - 42/30 simplified gives 7/5
- So, 7/10 + 21/30 = 7/5
In mixed form: 12/5
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