Add 72/40 and 90/15
1st number: 1 32/40, 2nd number: 6 0/15
72/40 + 90/15 is 39/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 15 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
72/40 = 72 × 3/40 × 3 = 216/120 - Likewise, for the 2nd fraction, since 15 × 8 = 120,
90/15 = 90 × 8/15 × 8 = 720/120 - Add the two like fractions:
216/120 + 720/120 = 216 + 720/120 = 936/120 - 936/120 simplified gives 39/5
- So, 72/40 + 90/15 = 39/5
In mixed form: 74/5
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