Add 15/42 and 90/12
1st number: 15/42, 2nd number: 7 6/12
15/42 + 90/12 is 55/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
15/42 = 15 × 2/42 × 2 = 30/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
90/12 = 90 × 7/12 × 7 = 630/84 - Add the two like fractions:
30/84 + 630/84 = 30 + 630/84 = 660/84 - 660/84 simplified gives 55/7
- So, 15/42 + 90/12 = 55/7
In mixed form: 76/7
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