Add 15/40 and 80/45
1st number: 15/40, 2nd number: 1 35/45
15/40 + 80/45 is 155/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 45 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
15/40 = 15 × 9/40 × 9 = 135/360 - Likewise, for the 2nd fraction, since 45 × 8 = 360,
80/45 = 80 × 8/45 × 8 = 640/360 - Add the two like fractions:
135/360 + 640/360 = 135 + 640/360 = 775/360 - 775/360 simplified gives 155/72
- So, 15/40 + 80/45 = 155/72
In mixed form: 211/72
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