Add 15/5 and 90/72
1st number: 3 0/5, 2nd number: 1 18/72
15/5 + 90/72 is 17/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 5 × 72 = 360,
15/5 = 15 × 72/5 × 72 = 1080/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
90/72 = 90 × 5/72 × 5 = 450/360 - Add the two like fractions:
1080/360 + 450/360 = 1080 + 450/360 = 1530/360 - 1530/360 simplified gives 17/4
- So, 15/5 + 90/72 = 17/4
In mixed form: 41/4
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