Add 15/60 and 70/80
15/60 + 70/80 is 9/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 60 × 4 = 240,
15/60 = 15 × 4/60 × 4 = 60/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
70/80 = 70 × 3/80 × 3 = 210/240 - Add the two like fractions:
60/240 + 210/240 = 60 + 210/240 = 270/240 - 270/240 simplified gives 9/8
- So, 15/60 + 70/80 = 9/8
In mixed form: 11/8
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