Add 12/42 and 64/40, Solve 12/42 + 1 24/40 as a fraction

Add 12/42 and 64/40

1^st number: 12/42, 2^nd number: 1 24/40

12/42 + 64/40 is 66/35.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 40 is 840

Next, find the equivalent fraction of both fractional numbers with denominator 840
For the 1st fraction, since 42 × 20 = 840,
12/42 = 12 × 20/42 × 20 = 240/840
Likewise, for the 2nd fraction, since 40 × 21 = 840,
64/40 = 64 × 21/40 × 21 = 1344/840
Add the two like fractions:
240/840 + 1344/840 = 240 + 1344/840 = 1584/840
1584/840 simplified gives 66/35
So, 12/42 + 64/40 = 66/35
In mixed form: 131/35

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