Add 90/72 and 3/20
1st number: 1 18/72, 2nd number: 3/20
90/72 + 3/20 is 7/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 20 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
90/72 = 90 × 5/72 × 5 = 450/360 - Likewise, for the 2nd fraction, since 20 × 18 = 360,
3/20 = 3 × 18/20 × 18 = 54/360 - Add the two like fractions:
450/360 + 54/360 = 450 + 54/360 = 504/360 - 504/360 simplified gives 7/5
- So, 90/72 + 3/20 = 7/5
In mixed form: 12/5
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