Add 64/45 and 70/72
1st number: 1 19/45, 2nd number: 70/72
64/45 + 70/72 is 431/180.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 45 × 8 = 360,
64/45 = 64 × 8/45 × 8 = 512/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
70/72 = 70 × 5/72 × 5 = 350/360 - Add the two like fractions:
512/360 + 350/360 = 512 + 350/360 = 862/360 - 862/360 simplified gives 431/180
- So, 64/45 + 70/72 = 431/180
In mixed form: 271/180
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