Add 42/10 and 21/7
1st number: 4 2/10, 2nd number: 3 0/7
42/10 + 21/7 is 36/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 7 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 10 × 7 = 70,
42/10 = 42 × 7/10 × 7 = 294/70 - Likewise, for the 2nd fraction, since 7 × 10 = 70,
21/7 = 21 × 10/7 × 10 = 210/70 - Add the two like fractions:
294/70 + 210/70 = 294 + 210/70 = 504/70 - 504/70 simplified gives 36/5
- So, 42/10 + 21/7 = 36/5
In mixed form: 71/5
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