Add 27/30 and 42/70
27/30 + 42/70 is 3/2.
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,
42/70 = 42 × 3/70 × 3 = 126/210 - Add the two like fractions:
189/210 + 126/210 = 189 + 126/210 = 315/210 - 315/210 simplified gives 3/2
- So, 27/30 + 42/70 = 3/2
In mixed form: 11/2
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