Add 28/20 and 45/70
1st number: 1 8/20, 2nd number: 45/70
28/20 + 45/70 is 143/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
28/20 = 28 × 7/20 × 7 = 196/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
45/70 = 45 × 2/70 × 2 = 90/140 - Add the two like fractions:
196/140 + 90/140 = 196 + 90/140 = 286/140 - 286/140 simplified gives 143/70
- So, 28/20 + 45/70 = 143/70
In mixed form: 23/70
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