Add 70/98 and 21/72
70/98 + 21/72 is 169/168.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 72 is 3528
Next, find the equivalent fraction of both fractional numbers with denominator 3528 - For the 1st fraction, since 98 × 36 = 3528,
70/98 = 70 × 36/98 × 36 = 2520/3528 - Likewise, for the 2nd fraction, since 72 × 49 = 3528,
21/72 = 21 × 49/72 × 49 = 1029/3528 - Add the two like fractions:
2520/3528 + 1029/3528 = 2520 + 1029/3528 = 3549/3528 - 3549/3528 simplified gives 169/168
- So, 70/98 + 21/72 = 169/168
In mixed form: 11/168
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