Add 72/9 and 21/70
1st number: 8 0/9, 2nd number: 21/70
72/9 + 21/70 is 83/10.
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,
21/70 = 21 × 9/70 × 9 = 189/630 - Add the two like fractions:
5040/630 + 189/630 = 5040 + 189/630 = 5229/630 - 5229/630 simplified gives 83/10
- So, 72/9 + 21/70 = 83/10
In mixed form: 83/10
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