Add 90/24 and 9/40, Solve 3 18/24 + 9/40 as a fraction

Add 90/24 and 9/40

1^st number: 3 18/24, 2^nd number: 9/40

90/24 + 9/40 is 159/40.

Find the least common denominator or LCM of the two denominators:
LCM of 24 and 40 is 120

Next, find the equivalent fraction of both fractional numbers with denominator 120
For the 1st fraction, since 24 × 5 = 120,
90/24 = 90 × 5/24 × 5 = 450/120
Likewise, for the 2nd fraction, since 40 × 3 = 120,
9/40 = 9 × 3/40 × 3 = 27/120
Add the two like fractions:
450/120 + 27/120 = 450 + 27/120 = 477/120
477/120 simplified gives 159/40
So, 90/24 + 9/40 = 159/40
In mixed form: 339/40

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