Add 70/12 and 90/28
1st number: 5 10/12, 2nd number: 3 6/28
70/12 + 90/28 is 190/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
70/12 = 70 × 7/12 × 7 = 490/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
90/28 = 90 × 3/28 × 3 = 270/84 - Add the two like fractions:
490/84 + 270/84 = 490 + 270/84 = 760/84 - 760/84 simplified gives 190/21
- So, 70/12 + 90/28 = 190/21
In mixed form: 91/21
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