Add 20/40 and 75/84
20/40 + 75/84 is 39/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 84 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 40 × 21 = 840,
20/40 = 20 × 21/40 × 21 = 420/840 - Likewise, for the 2nd fraction, since 84 × 10 = 840,
75/84 = 75 × 10/84 × 10 = 750/840 - Add the two like fractions:
420/840 + 750/840 = 420 + 750/840 = 1170/840 - 1170/840 simplified gives 39/28
- So, 20/40 + 75/84 = 39/28
In mixed form: 111/28
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