Add 9/45 and 21/7
1st number: 9/45, 2nd number: 3 0/7
9/45 + 21/7 is 16/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 7 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 45 × 7 = 315,
9/45 = 9 × 7/45 × 7 = 63/315 - Likewise, for the 2nd fraction, since 7 × 45 = 315,
21/7 = 21 × 45/7 × 45 = 945/315 - Add the two like fractions:
63/315 + 945/315 = 63 + 945/315 = 1008/315 - 1008/315 simplified gives 16/5
- So, 9/45 + 21/7 = 16/5
In mixed form: 31/5
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