Add 7/98 and 21/40
7/98 + 21/40 is 167/280.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 40 is 1960
Next, find the equivalent fraction of both fractional numbers with denominator 1960 - For the 1st fraction, since 98 × 20 = 1960,
7/98 = 7 × 20/98 × 20 = 140/1960 - Likewise, for the 2nd fraction, since 40 × 49 = 1960,
21/40 = 21 × 49/40 × 49 = 1029/1960 - Add the two like fractions:
140/1960 + 1029/1960 = 140 + 1029/1960 = 1169/1960 - 1169/1960 simplified gives 167/280
- So, 7/98 + 21/40 = 167/280
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