Add 20/15 and 40/70
1st number: 1 5/15, 2nd number: 40/70
20/15 + 40/70 is 40/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 15 × 14 = 210,
20/15 = 20 × 14/15 × 14 = 280/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
40/70 = 40 × 3/70 × 3 = 120/210 - Add the two like fractions:
280/210 + 120/210 = 280 + 120/210 = 400/210 - 400/210 simplified gives 40/21
- So, 20/15 + 40/70 = 40/21
In mixed form: 119/21
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