Add 75/10 and 12/21
1st number: 7 5/10, 2nd number: 12/21
75/10 + 12/21 is 113/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 10 × 21 = 210,
75/10 = 75 × 21/10 × 21 = 1575/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
12/21 = 12 × 10/21 × 10 = 120/210 - Add the two like fractions:
1575/210 + 120/210 = 1575 + 120/210 = 1695/210 - 1695/210 simplified gives 113/14
- So, 75/10 + 12/21 = 113/14
In mixed form: 81/14
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