Add 7/10 and 21/49
7/10 + 21/49 is 79/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 49 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 10 × 49 = 490,
7/10 = 7 × 49/10 × 49 = 343/490 - Likewise, for the 2nd fraction, since 49 × 10 = 490,
21/49 = 21 × 10/49 × 10 = 210/490 - Add the two like fractions:
343/490 + 210/490 = 343 + 210/490 = 553/490 - 553/490 simplified gives 79/70
- So, 7/10 + 21/49 = 79/70
In mixed form: 19/70
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