Add 84/72 and 90/25
1st number: 1 12/72, 2nd number: 3 15/25
84/72 + 90/25 is 143/30.
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,
84/72 = 84 × 25/72 × 25 = 2100/1800 - Likewise, for the 2nd fraction, since 25 × 72 = 1800,
90/25 = 90 × 72/25 × 72 = 6480/1800 - Add the two like fractions:
2100/1800 + 6480/1800 = 2100 + 6480/1800 = 8580/1800 - 8580/1800 simplified gives 143/30
- So, 84/72 + 90/25 = 143/30
In mixed form: 423/30
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