Add 35/42 and 20/80
35/42 + 20/80 is 13/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 42 × 40 = 1680,
35/42 = 35 × 40/42 × 40 = 1400/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
20/80 = 20 × 21/80 × 21 = 420/1680 - Add the two like fractions:
1400/1680 + 420/1680 = 1400 + 420/1680 = 1820/1680 - 1820/1680 simplified gives 13/12
- So, 35/42 + 20/80 = 13/12
In mixed form: 11/12
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