Add 15/40 and 42/9, Solve 15/40 + 4 6/9 as a fraction

Add 15/40 and 42/9

1^st number: 15/40, 2^nd number: 4 6/9

15/40 + 42/9 is 121/24.

Find the least common denominator or LCM of the two denominators:
LCM of 40 and 9 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 9 × 40 = 360,
42/9 = 42 × 40/9 × 40 = 1680/360
Add the two like fractions:
135/360 + 1680/360 = 135 + 1680/360 = 1815/360
1815/360 simplified gives 121/24
So, 15/40 + 42/9 = 121/24
In mixed form: 51/24

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