Add 20/32 and 70/72
20/32 + 70/72 is 115/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 32 and 72 is 288
Next, find the equivalent fraction of both fractional numbers with denominator 288 - For the 1st fraction, since 32 × 9 = 288,
20/32 = 20 × 9/32 × 9 = 180/288 - Likewise, for the 2nd fraction, since 72 × 4 = 288,
70/72 = 70 × 4/72 × 4 = 280/288 - Add the two like fractions:
180/288 + 280/288 = 180 + 280/288 = 460/288 - 460/288 simplified gives 115/72
- So, 20/32 + 70/72 = 115/72
In mixed form: 143/72
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