Add 84/72 and 20/45
1st number: 1 12/72, 2nd number: 20/45
84/72 + 20/45 is 29/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 45 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
84/72 = 84 × 5/72 × 5 = 420/360 - Likewise, for the 2nd fraction, since 45 × 8 = 360,
20/45 = 20 × 8/45 × 8 = 160/360 - Add the two like fractions:
420/360 + 160/360 = 420 + 160/360 = 580/360 - 580/360 simplified gives 29/18
- So, 84/72 + 20/45 = 29/18
In mixed form: 111/18
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