Add 30/40 and 70/72
30/40 + 70/72 is 31/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
30/40 = 30 × 9/40 × 9 = 270/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
70/72 = 70 × 5/72 × 5 = 350/360 - Add the two like fractions:
270/360 + 350/360 = 270 + 350/360 = 620/360 - 620/360 simplified gives 31/18
- So, 30/40 + 70/72 = 31/18
In mixed form: 113/18
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