Add 21/3 and 80/70
1st number: 7 0/3, 2nd number: 1 10/70
21/3 + 80/70 is 57/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 3 × 70 = 210,
21/3 = 21 × 70/3 × 70 = 1470/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
80/70 = 80 × 3/70 × 3 = 240/210 - Add the two like fractions:
1470/210 + 240/210 = 1470 + 240/210 = 1710/210 - 1710/210 simplified gives 57/7
- So, 21/3 + 80/70 = 57/7
In mixed form: 81/7
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