Add 63/70 and 30/21
1st number: 63/70, 2nd number: 1 9/21
63/70 + 30/21 is 163/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 21 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 21 × 10 = 210,
30/21 = 30 × 10/21 × 10 = 300/210 - Add the two like fractions:
189/210 + 300/210 = 189 + 300/210 = 489/210 - 489/210 simplified gives 163/70
- So, 63/70 + 30/21 = 163/70
In mixed form: 223/70
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