Add 27/30 and 20/70
27/30 + 20/70 is 83/70.
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,
27/30 = 27 × 7/30 × 7 = 189/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
20/70 = 20 × 3/70 × 3 = 60/210 - Add the two like fractions:
189/210 + 60/210 = 189 + 60/210 = 249/210 - 249/210 simplified gives 83/70
- So, 27/30 + 20/70 = 83/70
In mixed form: 113/70
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