Add 21/98 and 72/40
1st number: 21/98, 2nd number: 1 32/40
21/98 + 72/40 is 141/70.
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,
21/98 = 21 × 20/98 × 20 = 420/1960 - Likewise, for the 2nd fraction, since 40 × 49 = 1960,
72/40 = 72 × 49/40 × 49 = 3528/1960 - Add the two like fractions:
420/1960 + 3528/1960 = 420 + 3528/1960 = 3948/1960 - 3948/1960 simplified gives 141/70
- So, 21/98 + 72/40 = 141/70
In mixed form: 21/70
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