Add 72/9 and 80/70
1st number: 8 0/9, 2nd number: 1 10/70
72/9 + 80/70 is 64/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 9 × 70 = 630,
72/9 = 72 × 70/9 × 70 = 5040/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
80/70 = 80 × 9/70 × 9 = 720/630 - Add the two like fractions:
5040/630 + 720/630 = 5040 + 720/630 = 5760/630 - 5760/630 simplified gives 64/7
- So, 72/9 + 80/70 = 64/7
In mixed form: 91/7
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