Add 90/7 and 12/40
1st number: 12 6/7, 2nd number: 12/40
90/7 + 12/40 is 921/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 7 × 40 = 280,
90/7 = 90 × 40/7 × 40 = 3600/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
12/40 = 12 × 7/40 × 7 = 84/280 - Add the two like fractions:
3600/280 + 84/280 = 3600 + 84/280 = 3684/280 - 3684/280 simplified gives 921/70
- So, 90/7 + 12/40 = 921/70
In mixed form: 1311/70
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