Add 42/56 and 72/80
42/56 + 72/80 is 33/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 56 × 10 = 560,
42/56 = 42 × 10/56 × 10 = 420/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
72/80 = 72 × 7/80 × 7 = 504/560 - Add the two like fractions:
420/560 + 504/560 = 420 + 504/560 = 924/560 - 924/560 simplified gives 33/20
- So, 42/56 + 72/80 = 33/20
In mixed form: 113/20
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