Add 12/42 and 90/28
1st number: 12/42, 2nd number: 3 6/28
12/42 + 90/28 is 7/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
12/42 = 12 × 2/42 × 2 = 24/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
90/28 = 90 × 3/28 × 3 = 270/84 - Add the two like fractions:
24/84 + 270/84 = 24 + 270/84 = 294/84 - 294/84 simplified gives 7/2
- So, 12/42 + 90/28 = 7/2
In mixed form: 31/2
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