Add 72/80 and 40/27, Solve 72/80 + 1 13/27 as a fraction

Add 72/80 and 40/27

1^st number: 72/80, 2^nd number: 1 13/27

72/80 + 40/27 is 643/270.

Find the least common denominator or LCM of the two denominators:
LCM of 80 and 27 is 2160

Next, find the equivalent fraction of both fractional numbers with denominator 2160
For the 1st fraction, since 80 × 27 = 2160,
72/80 = 72 × 27/80 × 27 = 1944/2160
Likewise, for the 2nd fraction, since 27 × 80 = 2160,
40/27 = 40 × 80/27 × 80 = 3200/2160
Add the two like fractions:
1944/2160 + 3200/2160 = 1944 + 3200/2160 = 5144/2160
5144/2160 simplified gives 643/270
So, 72/80 + 40/27 = 643/270
In mixed form: 2103/270

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