Add 42/30 and 12/21
1st number: 1 12/30, 2nd number: 12/21
42/30 + 12/21 is 69/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
42/30 = 42 × 7/30 × 7 = 294/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
12/21 = 12 × 10/21 × 10 = 120/210 - Add the two like fractions:
294/210 + 120/210 = 294 + 120/210 = 414/210 - 414/210 simplified gives 69/35
- So, 42/30 + 12/21 = 69/35
In mixed form: 134/35
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