Add 20/42 and 70/10
1st number: 20/42, 2nd number: 7 0/10
20/42 + 70/10 is 157/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 10 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
20/42 = 20 × 5/42 × 5 = 100/210 - Likewise, for the 2nd fraction, since 10 × 21 = 210,
70/10 = 70 × 21/10 × 21 = 1470/210 - Add the two like fractions:
100/210 + 1470/210 = 100 + 1470/210 = 1570/210 - 1570/210 simplified gives 157/21
- So, 20/42 + 70/10 = 157/21
In mixed form: 710/21
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