Add 72/10 and 42/70
1st number: 7 2/10, 2nd number: 42/70
72/10 + 42/70 is 39/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 10 × 7 = 70,
72/10 = 72 × 7/10 × 7 = 504/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
42/70 = 42 × 1/70 × 1 = 42/70 - Add the two like fractions:
504/70 + 42/70 = 504 + 42/70 = 546/70 - 546/70 simplified gives 39/5
- So, 72/10 + 42/70 = 39/5
In mixed form: 74/5
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