Add 90/72 and 90/25
1st number: 1 18/72, 2nd number: 3 15/25
90/72 + 90/25 is 97/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 25 is 1800
Next, find the equivalent fraction of both fractional numbers with denominator 1800 - For the 1st fraction, since 72 × 25 = 1800,
90/72 = 90 × 25/72 × 25 = 2250/1800 - Likewise, for the 2nd fraction, since 25 × 72 = 1800,
90/25 = 90 × 72/25 × 72 = 6480/1800 - Add the two like fractions:
2250/1800 + 6480/1800 = 2250 + 6480/1800 = 8730/1800 - 8730/1800 simplified gives 97/20
- So, 90/72 + 90/25 = 97/20
In mixed form: 417/20
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