Add 5/21 and 2/45
5/21 + 2/45 is 89/315.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 21 × 15 = 315,
5/21 = 5 × 15/21 × 15 = 75/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
2/45 = 2 × 7/45 × 7 = 14/315 - Add the two like fractions:
75/315 + 14/315 = 75 + 14/315 = 89/315 - So, 5/21 + 2/45 = 89/315
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