Add 70/21 and 42/10
1st number: 3 7/21, 2nd number: 4 2/10
70/21 + 42/10 is 113/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 10 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
70/21 = 70 × 10/21 × 10 = 700/210 - Likewise, for the 2nd fraction, since 10 × 21 = 210,
42/10 = 42 × 21/10 × 21 = 882/210 - Add the two like fractions:
700/210 + 882/210 = 700 + 882/210 = 1582/210 - 1582/210 simplified gives 113/15
- So, 70/21 + 42/10 = 113/15
In mixed form: 78/15
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