Add 20/70 and 70/42
1st number: 20/70, 2nd number: 1 28/42
20/70 + 70/42 is 41/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
20/70 = 20 × 3/70 × 3 = 60/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
70/42 = 70 × 5/42 × 5 = 350/210 - Add the two like fractions:
60/210 + 350/210 = 60 + 350/210 = 410/210 - 410/210 simplified gives 41/21
- So, 20/70 + 70/42 = 41/21
In mixed form: 120/21
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