Add 80/42 and 56/72, Solve 1 38/42 + 56/72 as a fraction

Add 80/42 and 56/72

1^st number: 1 38/42, 2^nd number: 56/72

80/42 + 56/72 is 169/63.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 72 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 42 × 12 = 504,
80/42 = 80 × 12/42 × 12 = 960/504
Likewise, for the 2nd fraction, since 72 × 7 = 504,
56/72 = 56 × 7/72 × 7 = 392/504
Add the two like fractions:
960/504 + 392/504 = 960 + 392/504 = 1352/504
1352/504 simplified gives 169/63
So, 80/42 + 56/72 = 169/63
In mixed form: 243/63

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