Add 90/15 and 72/80
1st number: 6 0/15, 2nd number: 72/80
90/15 + 72/80 is 69/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 15 × 16 = 240,
90/15 = 90 × 16/15 × 16 = 1440/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
72/80 = 72 × 3/80 × 3 = 216/240 - Add the two like fractions:
1440/240 + 216/240 = 1440 + 216/240 = 1656/240 - 1656/240 simplified gives 69/10
- So, 90/15 + 72/80 = 69/10
In mixed form: 69/10
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