Add 42/15 and 3/40, Solve 2 12/15 + 3/40 as a fraction

Add 42/15 and 3/40

1^st number: 2 12/15, 2^nd number: 3/40

42/15 + 3/40 is 23/8.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 40 is 120

Next, find the equivalent fraction of both fractional numbers with denominator 120
For the 1st fraction, since 15 × 8 = 120,
42/15 = 42 × 8/15 × 8 = 336/120
Likewise, for the 2nd fraction, since 40 × 3 = 120,
3/40 = 3 × 3/40 × 3 = 9/120
Add the two like fractions:
336/120 + 9/120 = 336 + 9/120 = 345/120
345/120 simplified gives 23/8
So, 42/15 + 3/40 = 23/8
In mixed form: 27/8

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