Add 50/70 and 15/21
50/70 + 15/21 is 10/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
50/70 = 50 × 3/70 × 3 = 150/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
15/21 = 15 × 10/21 × 10 = 150/210 - Add the two like fractions:
150/210 + 150/210 = 150 + 150/210 = 300/210 - 300/210 simplified gives 10/7
- So, 50/70 + 15/21 = 10/7
In mixed form: 13/7
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