Add 75/80 and 42/63, Solve 75/80 + 42/63 as a fraction

Add 75/80 and 42/63

75/80 + 42/63 is 77/48.

Find the least common denominator or LCM of the two denominators:
LCM of 80 and 63 is 5040

Next, find the equivalent fraction of both fractional numbers with denominator 5040
For the 1st fraction, since 80 × 63 = 5040,
75/80 = 75 × 63/80 × 63 = 4725/5040
Likewise, for the 2nd fraction, since 63 × 80 = 5040,
42/63 = 42 × 80/63 × 80 = 3360/5040
Add the two like fractions:
4725/5040 + 3360/5040 = 4725 + 3360/5040 = 8085/5040
8085/5040 simplified gives 77/48
So, 75/80 + 42/63 = 77/48
In mixed form: 129/48

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