Add 28/72 and 90/12
1st number: 28/72, 2nd number: 7 6/12
28/72 + 90/12 is 71/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 12 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
28/72 = 28 × 1/72 × 1 = 28/72 - Likewise, for the 2nd fraction, since 12 × 6 = 72,
90/12 = 90 × 6/12 × 6 = 540/72 - Add the two like fractions:
28/72 + 540/72 = 28 + 540/72 = 568/72 - 568/72 simplified gives 71/9
- So, 28/72 + 90/12 = 71/9
In mixed form: 78/9
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