Add 72/20 and 90/72
1st number: 3 12/20, 2nd number: 1 18/72
72/20 + 90/72 is 97/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 20 × 18 = 360,
72/20 = 72 × 18/20 × 18 = 1296/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
90/72 = 90 × 5/72 × 5 = 450/360 - Add the two like fractions:
1296/360 + 450/360 = 1296 + 450/360 = 1746/360 - 1746/360 simplified gives 97/20
- So, 72/20 + 90/72 = 97/20
In mixed form: 417/20
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