Add 84/40 and 21/70
1st number: 2 4/40, 2nd number: 21/70
84/40 + 21/70 is 12/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 70 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
84/40 = 84 × 7/40 × 7 = 588/280 - Likewise, for the 2nd fraction, since 70 × 4 = 280,
21/70 = 21 × 4/70 × 4 = 84/280 - Add the two like fractions:
588/280 + 84/280 = 588 + 84/280 = 672/280 - 672/280 simplified gives 12/5
- So, 84/40 + 21/70 = 12/5
In mixed form: 22/5
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