Add 72/90 and 8/20
72/90 + 8/20 is 6/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
72/90 = 72 × 2/90 × 2 = 144/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
8/20 = 8 × 9/20 × 9 = 72/180 - Add the two like fractions:
144/180 + 72/180 = 144 + 72/180 = 216/180 - 216/180 simplified gives 6/5
- So, 72/90 + 8/20 = 6/5
In mixed form: 11/5
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