Add 20/70 and 21/98
20/70 + 21/98 is 1/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 98 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 70 × 7 = 490,
20/70 = 20 × 7/70 × 7 = 140/490 - Likewise, for the 2nd fraction, since 98 × 5 = 490,
21/98 = 21 × 5/98 × 5 = 105/490 - Add the two like fractions:
140/490 + 105/490 = 140 + 105/490 = 245/490 - 245/490 simplified gives 1/2
- So, 20/70 + 21/98 = 1/2
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