Add 42/84 and 8/5
1st number: 42/84, 2nd number: 1 3/5
42/84 + 8/5 is 21/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 5 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
42/84 = 42 × 5/84 × 5 = 210/420 - Likewise, for the 2nd fraction, since 5 × 84 = 420,
8/5 = 8 × 84/5 × 84 = 672/420 - Add the two like fractions:
210/420 + 672/420 = 210 + 672/420 = 882/420 - 882/420 simplified gives 21/10
- So, 42/84 + 8/5 = 21/10
In mixed form: 21/10
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