Add 30/40 and 70/80
30/40 + 70/80 is 13/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 40 × 2 = 80,
30/40 = 30 × 2/40 × 2 = 60/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
70/80 = 70 × 1/80 × 1 = 70/80 - Add the two like fractions:
60/80 + 70/80 = 60 + 70/80 = 130/80 - 130/80 simplified gives 13/8
- So, 30/40 + 70/80 = 13/8
In mixed form: 15/8
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