Add 21/98 and 18/30
21/98 + 18/30 is 57/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 30 is 1470
Next, find the equivalent fraction of both fractional numbers with denominator 1470 - For the 1st fraction, since 98 × 15 = 1470,
21/98 = 21 × 15/98 × 15 = 315/1470 - Likewise, for the 2nd fraction, since 30 × 49 = 1470,
18/30 = 18 × 49/30 × 49 = 882/1470 - Add the two like fractions:
315/1470 + 882/1470 = 315 + 882/1470 = 1197/1470 - 1197/1470 simplified gives 57/70
- So, 21/98 + 18/30 = 57/70
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