Add 90/80 and 56/63, Solve 1 10/80 + 56/63 as a fraction

Add 90/80 and 56/63

1^st number: 1 10/80, 2^nd number: 56/63

90/80 + 56/63 is 145/72.

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,
90/80 = 90 × 63/80 × 63 = 5670/5040
Likewise, for the 2nd fraction, since 63 × 80 = 5040,
56/63 = 56 × 80/63 × 80 = 4480/5040
Add the two like fractions:
5670/5040 + 4480/5040 = 5670 + 4480/5040 = 10150/5040
10150/5040 simplified gives 145/72
So, 90/80 + 56/63 = 145/72
In mixed form: 21/72

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