Add 70/15 and 20/72
1st number: 4 10/15, 2nd number: 20/72
70/15 + 20/72 is 89/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 15 × 24 = 360,
70/15 = 70 × 24/15 × 24 = 1680/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
20/72 = 20 × 5/72 × 5 = 100/360 - Add the two like fractions:
1680/360 + 100/360 = 1680 + 100/360 = 1780/360 - 1780/360 simplified gives 89/18
- So, 70/15 + 20/72 = 89/18
In mixed form: 417/18
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