Add 28/7 and 21/45
1st number: 4 0/7, 2nd number: 21/45
28/7 + 21/45 is 67/15.
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,
28/7 = 28 × 45/7 × 45 = 1260/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
21/45 = 21 × 7/45 × 7 = 147/315 - Add the two like fractions:
1260/315 + 147/315 = 1260 + 147/315 = 1407/315 - 1407/315 simplified gives 67/15
- So, 28/7 + 21/45 = 67/15
In mixed form: 47/15
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