Add 72/90 and 90/25
1st number: 72/90, 2nd number: 3 15/25
72/90 + 90/25 is 22/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 25 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 90 × 5 = 450,
72/90 = 72 × 5/90 × 5 = 360/450 - Likewise, for the 2nd fraction, since 25 × 18 = 450,
90/25 = 90 × 18/25 × 18 = 1620/450 - Add the two like fractions:
360/450 + 1620/450 = 360 + 1620/450 = 1980/450 - 1980/450 simplified gives 22/5
- So, 72/90 + 90/25 = 22/5
In mixed form: 42/5
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