Add 18/20 and 28/49
18/20 + 28/49 is 103/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 49 is 980
Next, find the equivalent fraction of both fractional numbers with denominator 980 - For the 1st fraction, since 20 × 49 = 980,
18/20 = 18 × 49/20 × 49 = 882/980 - Likewise, for the 2nd fraction, since 49 × 20 = 980,
28/49 = 28 × 20/49 × 20 = 560/980 - Add the two like fractions:
882/980 + 560/980 = 882 + 560/980 = 1442/980 - 1442/980 simplified gives 103/70
- So, 18/20 + 28/49 = 103/70
In mixed form: 133/70
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