Add 90/75 and 20/72
1st number: 1 15/75, 2nd number: 20/72
90/75 + 20/72 is 133/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 72 is 1800
Next, find the equivalent fraction of both fractional numbers with denominator 1800 - For the 1st fraction, since 75 × 24 = 1800,
90/75 = 90 × 24/75 × 24 = 2160/1800 - Likewise, for the 2nd fraction, since 72 × 25 = 1800,
20/72 = 20 × 25/72 × 25 = 500/1800 - Add the two like fractions:
2160/1800 + 500/1800 = 2160 + 500/1800 = 2660/1800 - 2660/1800 simplified gives 133/90
- So, 90/75 + 20/72 = 133/90
In mixed form: 143/90
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