Add 20/30 and 10/70
20/30 + 10/70 is 17/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
20/30 = 20 × 7/30 × 7 = 140/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
10/70 = 10 × 3/70 × 3 = 30/210 - Add the two like fractions:
140/210 + 30/210 = 140 + 30/210 = 170/210 - 170/210 simplified gives 17/21
- So, 20/30 + 10/70 = 17/21
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