Add 21/2 and 45/70
1st number: 10 1/2, 2nd number: 45/70
21/2 + 45/70 is 78/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 2 × 35 = 70,
21/2 = 21 × 35/2 × 35 = 735/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
45/70 = 45 × 1/70 × 1 = 45/70 - Add the two like fractions:
735/70 + 45/70 = 735 + 45/70 = 780/70 - 780/70 simplified gives 78/7
- So, 21/2 + 45/70 = 78/7
In mixed form: 111/7
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