Add 5/21 and 40/49
5/21 + 40/49 is 155/147.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 49 is 147
Next, find the equivalent fraction of both fractional numbers with denominator 147 - For the 1st fraction, since 21 × 7 = 147,
5/21 = 5 × 7/21 × 7 = 35/147 - Likewise, for the 2nd fraction, since 49 × 3 = 147,
40/49 = 40 × 3/49 × 3 = 120/147 - Add the two like fractions:
35/147 + 120/147 = 35 + 120/147 = 155/147 - So, 5/21 + 40/49 = 155/147
In mixed form: 18/147
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