Add 75/20 and 70/72
1st number: 3 15/20, 2nd number: 70/72
75/20 + 70/72 is 85/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 20 × 18 = 360,
75/20 = 75 × 18/20 × 18 = 1350/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
70/72 = 70 × 5/72 × 5 = 350/360 - Add the two like fractions:
1350/360 + 350/360 = 1350 + 350/360 = 1700/360 - 1700/360 simplified gives 85/18
- So, 75/20 + 70/72 = 85/18
In mixed form: 413/18
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