Add 70/72 and 20/25
70/72 + 20/25 is 319/180.
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,
70/72 = 70 × 25/72 × 25 = 1750/1800 - Likewise, for the 2nd fraction, since 25 × 72 = 1800,
20/25 = 20 × 72/25 × 72 = 1440/1800 - Add the two like fractions:
1750/1800 + 1440/1800 = 1750 + 1440/1800 = 3190/1800 - 3190/1800 simplified gives 319/180
- So, 70/72 + 20/25 = 319/180
In mixed form: 1139/180
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