Add 9/42 and 90/70
1st number: 9/42, 2nd number: 1 20/70
9/42 + 90/70 is 3/2.
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,
9/42 = 9 × 5/42 × 5 = 45/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
90/70 = 90 × 3/70 × 3 = 270/210 - Add the two like fractions:
45/210 + 270/210 = 45 + 270/210 = 315/210 - 315/210 simplified gives 3/2
- So, 9/42 + 90/70 = 3/2
In mixed form: 11/2
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