Add 28/72 and 70/63, Solve 28/72 + 1 7/63 as a fraction

Add 28/72 and 70/63

1^st number: 28/72, 2^nd number: 1 7/63

28/72 + 70/63 is 3/2.

Find the least common denominator or LCM of the two denominators:
LCM of 72 and 63 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 72 × 7 = 504,
28/72 = 28 × 7/72 × 7 = 196/504
Likewise, for the 2nd fraction, since 63 × 8 = 504,
70/63 = 70 × 8/63 × 8 = 560/504
Add the two like fractions:
196/504 + 560/504 = 196 + 560/504 = 756/504
756/504 simplified gives 3/2
So, 28/72 + 70/63 = 3/2
In mixed form: 11/2

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