Add 35/42 and 21/80
35/42 + 21/80 is 263/240.
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,
21/80 = 21 × 21/80 × 21 = 441/1680 - Add the two like fractions:
1400/1680 + 441/1680 = 1400 + 441/1680 = 1841/1680 - 1841/1680 simplified gives 263/240
- So, 35/42 + 21/80 = 263/240
In mixed form: 123/240
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