Add 45/21 and 80/10
1st number: 2 3/21, 2nd number: 8 0/10
45/21 + 80/10 is 71/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 10 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
45/21 = 45 × 10/21 × 10 = 450/210 - Likewise, for the 2nd fraction, since 10 × 21 = 210,
80/10 = 80 × 21/10 × 21 = 1680/210 - Add the two like fractions:
450/210 + 1680/210 = 450 + 1680/210 = 2130/210 - 2130/210 simplified gives 71/7
- So, 45/21 + 80/10 = 71/7
In mixed form: 101/7
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