Add 18/70 and 21/28
18/70 + 21/28 is 141/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 70 × 2 = 140,
18/70 = 18 × 2/70 × 2 = 36/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
21/28 = 21 × 5/28 × 5 = 105/140 - Add the two like fractions:
36/140 + 105/140 = 36 + 105/140 = 141/140 - So, 18/70 + 21/28 = 141/140
In mixed form: 11/140
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