Add 20/90 and 84/72
1st number: 20/90, 2nd number: 1 12/72
20/90 + 84/72 is 25/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 90 × 4 = 360,
20/90 = 20 × 4/90 × 4 = 80/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
84/72 = 84 × 5/72 × 5 = 420/360 - Add the two like fractions:
80/360 + 420/360 = 80 + 420/360 = 500/360 - 500/360 simplified gives 25/18
- So, 20/90 + 84/72 = 25/18
In mixed form: 17/18
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