Add 5/7 and 15/45
5/7 + 15/45 is 22/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 7 × 45 = 315,
5/7 = 5 × 45/7 × 45 = 225/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
15/45 = 15 × 7/45 × 7 = 105/315 - Add the two like fractions:
225/315 + 105/315 = 225 + 105/315 = 330/315 - 330/315 simplified gives 22/21
- So, 5/7 + 15/45 = 22/21
In mixed form: 11/21
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