Add 8/70 and 80/21
1st number: 8/70, 2nd number: 3 17/21
8/70 + 80/21 is 412/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
8/70 = 8 × 3/70 × 3 = 24/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
80/21 = 80 × 10/21 × 10 = 800/210 - Add the two like fractions:
24/210 + 800/210 = 24 + 800/210 = 824/210 - 824/210 simplified gives 412/105
- So, 8/70 + 80/21 = 412/105
In mixed form: 397/105
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