Add 80/30 and 90/72
1st number: 2 20/30, 2nd number: 1 18/72
80/30 + 90/72 is 47/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 30 × 12 = 360,
80/30 = 80 × 12/30 × 12 = 960/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
90/72 = 90 × 5/72 × 5 = 450/360 - Add the two like fractions:
960/360 + 450/360 = 960 + 450/360 = 1410/360 - 1410/360 simplified gives 47/12
- So, 80/30 + 90/72 = 47/12
In mixed form: 311/12
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