Add 42/56 and 42/80, Solve 42/56 + 42/80 as a fraction

Add 42/56 and 42/80

42/56 + 42/80 is 51/40.

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,
42/80 = 42 × 7/80 × 7 = 294/560
Add the two like fractions:
420/560 + 294/560 = 420 + 294/560 = 714/560
714/560 simplified gives 51/40
So, 42/56 + 42/80 = 51/40
In mixed form: 111/40

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