Add 25/2 and 90/72, Solve 12 1/2 + 1 18/72 as a fraction

Add 25/2 and 90/72

1^st number: 12 1/2, 2^nd number: 1 18/72

25/2 + 90/72 is 55/4.

Find the least common denominator or LCM of the two denominators:
LCM of 2 and 72 is 72

Next, find the equivalent fraction of both fractional numbers with denominator 72
For the 1st fraction, since 2 × 36 = 72,
25/2 = 25 × 36/2 × 36 = 900/72
Likewise, for the 2nd fraction, since 72 × 1 = 72,
90/72 = 90 × 1/72 × 1 = 90/72
Add the two like fractions:
900/72 + 90/72 = 900 + 90/72 = 990/72
990/72 simplified gives 55/4
So, 25/2 + 90/72 = 55/4
In mixed form: 133/4

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