Add 70/72 and 63/20
1st number: 70/72, 2nd number: 3 3/20
70/72 + 63/20 is 371/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 20 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
70/72 = 70 × 5/72 × 5 = 350/360 - Likewise, for the 2nd fraction, since 20 × 18 = 360,
63/20 = 63 × 18/20 × 18 = 1134/360 - Add the two like fractions:
350/360 + 1134/360 = 350 + 1134/360 = 1484/360 - 1484/360 simplified gives 371/90
- So, 70/72 + 63/20 = 371/90
In mixed form: 411/90
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