Add 3/42 and 90/70
1st number: 3/42, 2nd number: 1 20/70
3/42 + 90/70 is 19/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
3/42 = 3 × 5/42 × 5 = 15/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
90/70 = 90 × 3/70 × 3 = 270/210 - Add the two like fractions:
15/210 + 270/210 = 15 + 270/210 = 285/210 - 285/210 simplified gives 19/14
- So, 3/42 + 90/70 = 19/14
In mixed form: 15/14
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