Add 7/90 and 81/28, Solve 7/90 + 2 25/28 as a fraction

Add 7/90 and 81/28

1^st number: 7/90, 2^nd number: 2 25/28

7/90 + 81/28 is 3743/1260.

Find the least common denominator or LCM of the two denominators:
LCM of 90 and 28 is 1260

Next, find the equivalent fraction of both fractional numbers with denominator 1260
For the 1st fraction, since 90 × 14 = 1260,
7/90 = 7 × 14/90 × 14 = 98/1260
Likewise, for the 2nd fraction, since 28 × 45 = 1260,
81/28 = 81 × 45/28 × 45 = 3645/1260
Add the two like fractions:
98/1260 + 3645/1260 = 98 + 3645/1260 = 3743/1260
So, 7/90 + 81/28 = 3743/1260
In mixed form: 21223/1260

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