Add 63/70 and 18/15
1st number: 63/70, 2nd number: 1 3/15
63/70 + 18/15 is 21/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 15 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
63/70 = 63 × 3/70 × 3 = 189/210 - Likewise, for the 2nd fraction, since 15 × 14 = 210,
18/15 = 18 × 14/15 × 14 = 252/210 - Add the two like fractions:
189/210 + 252/210 = 189 + 252/210 = 441/210 - 441/210 simplified gives 21/10
- So, 63/70 + 18/15 = 21/10
In mixed form: 21/10
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