Add 90/12 and 15/70
1st number: 7 6/12, 2nd number: 15/70
90/12 + 15/70 is 54/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 70 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 12 × 35 = 420,
90/12 = 90 × 35/12 × 35 = 3150/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
15/70 = 15 × 6/70 × 6 = 90/420 - Add the two like fractions:
3150/420 + 90/420 = 3150 + 90/420 = 3240/420 - 3240/420 simplified gives 54/7
- So, 90/12 + 15/70 = 54/7
In mixed form: 75/7
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