Add 15/40 and 90/18
1st number: 15/40, 2nd number: 5 0/18
15/40 + 90/18 is 43/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 18 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 18 × 20 = 360,
90/18 = 90 × 20/18 × 20 = 1800/360 - Add the two like fractions:
135/360 + 1800/360 = 135 + 1800/360 = 1935/360 - 1935/360 simplified gives 43/8
- So, 15/40 + 90/18 = 43/8
In mixed form: 53/8
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