Add 63/80 and 36/42
63/80 + 36/42 is 921/560.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 42 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 80 × 21 = 1680,
63/80 = 63 × 21/80 × 21 = 1323/1680 - Likewise, for the 2nd fraction, since 42 × 40 = 1680,
36/42 = 36 × 40/42 × 40 = 1440/1680 - Add the two like fractions:
1323/1680 + 1440/1680 = 1323 + 1440/1680 = 2763/1680 - 2763/1680 simplified gives 921/560
- So, 63/80 + 36/42 = 921/560
In mixed form: 1361/560
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