Add 45/72 and 80/7, Solve 45/72 + 11 3/7 as a fraction

Add 45/72 and 80/7

1^st number: 45/72, 2^nd number: 11 3/7

45/72 + 80/7 is 675/56.

Find the least common denominator or LCM of the two denominators:
LCM of 72 and 7 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 72 × 7 = 504,
45/72 = 45 × 7/72 × 7 = 315/504
Likewise, for the 2nd fraction, since 7 × 72 = 504,
80/7 = 80 × 72/7 × 72 = 5760/504
Add the two like fractions:
315/504 + 5760/504 = 315 + 5760/504 = 6075/504
6075/504 simplified gives 675/56
So, 45/72 + 80/7 = 675/56
In mixed form: 123/56

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