Add 42/98 and 21/30
42/98 + 21/30 is 79/70.
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,
42/98 = 42 × 15/98 × 15 = 630/1470 - Likewise, for the 2nd fraction, since 30 × 49 = 1470,
21/30 = 21 × 49/30 × 49 = 1029/1470 - Add the two like fractions:
630/1470 + 1029/1470 = 630 + 1029/1470 = 1659/1470 - 1659/1470 simplified gives 79/70
- So, 42/98 + 21/30 = 79/70
In mixed form: 19/70
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