Add 20/5 and 80/42
1st number: 4 0/5, 2nd number: 1 38/42
20/5 + 80/42 is 124/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 5 × 42 = 210,
20/5 = 20 × 42/5 × 42 = 840/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
80/42 = 80 × 5/42 × 5 = 400/210 - Add the two like fractions:
840/210 + 400/210 = 840 + 400/210 = 1240/210 - 1240/210 simplified gives 124/21
- So, 20/5 + 80/42 = 124/21
In mixed form: 519/21
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