Add 90/72 and 45/9
1st number: 1 18/72, 2nd number: 5 0/9
90/72 + 45/9 is 25/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 9 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
90/72 = 90 × 1/72 × 1 = 90/72 - Likewise, for the 2nd fraction, since 9 × 8 = 72,
45/9 = 45 × 8/9 × 8 = 360/72 - Add the two like fractions:
90/72 + 360/72 = 90 + 360/72 = 450/72 - 450/72 simplified gives 25/4
- So, 90/72 + 45/9 = 25/4
In mixed form: 61/4
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