Add 18/20 and 84/28
1st number: 18/20, 2nd number: 3 0/28
18/20 + 84/28 is 39/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
18/20 = 18 × 7/20 × 7 = 126/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
84/28 = 84 × 5/28 × 5 = 420/140 - Add the two like fractions:
126/140 + 420/140 = 126 + 420/140 = 546/140 - 546/140 simplified gives 39/10
- So, 18/20 + 84/28 = 39/10
In mixed form: 39/10
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