Add 72/7 and 20/45
1st number: 10 2/7, 2nd number: 20/45
72/7 + 20/45 is 676/63.
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,
72/7 = 72 × 45/7 × 45 = 3240/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
20/45 = 20 × 7/45 × 7 = 140/315 - Add the two like fractions:
3240/315 + 140/315 = 3240 + 140/315 = 3380/315 - 3380/315 simplified gives 676/63
- So, 72/7 + 20/45 = 676/63
In mixed form: 1046/63
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