Add 15/70 and 80/40
1st number: 15/70, 2nd number: 2 0/40
15/70 + 80/40 is 31/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 70 × 4 = 280,
15/70 = 15 × 4/70 × 4 = 60/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
80/40 = 80 × 7/40 × 7 = 560/280 - Add the two like fractions:
60/280 + 560/280 = 60 + 560/280 = 620/280 - 620/280 simplified gives 31/14
- So, 15/70 + 80/40 = 31/14
In mixed form: 23/14
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