Add 42/5 and 20/72
1st number: 8 2/5, 2nd number: 20/72
42/5 + 20/72 is 781/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 5 × 72 = 360,
42/5 = 42 × 72/5 × 72 = 3024/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
20/72 = 20 × 5/72 × 5 = 100/360 - Add the two like fractions:
3024/360 + 100/360 = 3024 + 100/360 = 3124/360 - 3124/360 simplified gives 781/90
- So, 42/5 + 20/72 = 781/90
In mixed form: 861/90
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