Add 42/30 and 18/21
1st number: 1 12/30, 2nd number: 18/21
42/30 + 18/21 is 79/35.
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,
18/21 = 18 × 10/21 × 10 = 180/210 - Add the two like fractions:
294/210 + 180/210 = 294 + 180/210 = 474/210 - 474/210 simplified gives 79/35
- So, 42/30 + 18/21 = 79/35
In mixed form: 29/35
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