Add 21/70 and 54/49
1st number: 21/70, 2nd number: 1 5/49
21/70 + 54/49 is 687/490.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 49 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 70 × 7 = 490,
21/70 = 21 × 7/70 × 7 = 147/490 - Likewise, for the 2nd fraction, since 49 × 10 = 490,
54/49 = 54 × 10/49 × 10 = 540/490 - Add the two like fractions:
147/490 + 540/490 = 147 + 540/490 = 687/490 - So, 21/70 + 54/49 = 687/490
In mixed form: 1197/490
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