Add 21/49 and 7/30
21/49 + 7/30 is 139/210.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 30 is 1470
Next, find the equivalent fraction of both fractional numbers with denominator 1470 - For the 1st fraction, since 49 × 30 = 1470,
21/49 = 21 × 30/49 × 30 = 630/1470 - Likewise, for the 2nd fraction, since 30 × 49 = 1470,
7/30 = 7 × 49/30 × 49 = 343/1470 - Add the two like fractions:
630/1470 + 343/1470 = 630 + 343/1470 = 973/1470 - 973/1470 simplified gives 139/210
- So, 21/49 + 7/30 = 139/210
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