Add 64/20 and 70/72
1st number: 3 4/20, 2nd number: 70/72
64/20 + 70/72 is 751/180.
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,
64/20 = 64 × 18/20 × 18 = 1152/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
70/72 = 70 × 5/72 × 5 = 350/360 - Add the two like fractions:
1152/360 + 350/360 = 1152 + 350/360 = 1502/360 - 1502/360 simplified gives 751/180
- So, 64/20 + 70/72 = 751/180
In mixed form: 431/180
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