Add 12/7 and 27/40, Solve 1 5/7 + 27/40 as a fraction

Add 12/7 and 27/40

1^st number: 1 5/7, 2^nd number: 27/40

12/7 + 27/40 is 669/280.

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 40 is 280

Next, find the equivalent fraction of both fractional numbers with denominator 280
For the 1st fraction, since 7 × 40 = 280,
12/7 = 12 × 40/7 × 40 = 480/280
Likewise, for the 2nd fraction, since 40 × 7 = 280,
27/40 = 27 × 7/40 × 7 = 189/280
Add the two like fractions:
480/280 + 189/280 = 480 + 189/280 = 669/280
So, 12/7 + 27/40 = 669/280
In mixed form: 2109/280

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