Add 70/20 and 28/45
1st number: 3 10/20, 2nd number: 28/45
70/20 + 28/45 is 371/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
70/20 = 70 × 9/20 × 9 = 630/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
28/45 = 28 × 4/45 × 4 = 112/180 - Add the two like fractions:
630/180 + 112/180 = 630 + 112/180 = 742/180 - 742/180 simplified gives 371/90
- So, 70/20 + 28/45 = 371/90
In mixed form: 411/90
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