Add 63/80 and 42/70, Solve 63/80 + 42/70 as a fraction

Add 63/80 and 42/70

63/80 + 42/70 is 111/80.

Find the least common denominator or LCM of the two denominators:
LCM of 80 and 70 is 560

Next, find the equivalent fraction of both fractional numbers with denominator 560
For the 1st fraction, since 80 × 7 = 560,
63/80 = 63 × 7/80 × 7 = 441/560
Likewise, for the 2nd fraction, since 70 × 8 = 560,
42/70 = 42 × 8/70 × 8 = 336/560
Add the two like fractions:
441/560 + 336/560 = 441 + 336/560 = 777/560
777/560 simplified gives 111/80
So, 63/80 + 42/70 = 111/80
In mixed form: 131/80

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