Add 81/5 and 42/70
1st number: 16 1/5, 2nd number: 42/70
81/5 + 42/70 is 84/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 5 × 14 = 70,
81/5 = 81 × 14/5 × 14 = 1134/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
42/70 = 42 × 1/70 × 1 = 42/70 - Add the two like fractions:
1134/70 + 42/70 = 1134 + 42/70 = 1176/70 - 1176/70 simplified gives 84/5
- So, 81/5 + 42/70 = 84/5
In mixed form: 164/5
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