Add 21/10 and 98/70
1st number: 2 1/10, 2nd number: 1 28/70
21/10 + 98/70 is 7/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 10 × 7 = 70,
21/10 = 21 × 7/10 × 7 = 147/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
98/70 = 98 × 1/70 × 1 = 98/70 - Add the two like fractions:
147/70 + 98/70 = 147 + 98/70 = 245/70 - 245/70 simplified gives 7/2
- So, 21/10 + 98/70 = 7/2
In mixed form: 31/2
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