Add 72/7 and 80/40
1st number: 10 2/7, 2nd number: 2 0/40
72/7 + 80/40 is 86/7.
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,
72/7 = 72 × 40/7 × 40 = 2880/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
80/40 = 80 × 7/40 × 7 = 560/280 - Add the two like fractions:
2880/280 + 560/280 = 2880 + 560/280 = 3440/280 - 3440/280 simplified gives 86/7
- So, 72/7 + 80/40 = 86/7
In mixed form: 122/7
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