Add 21/7 and 40/16, Solve 3 0/7 + 2 8/16 as a fraction

Add 21/7 and 40/16

1^st number: 3 0/7, 2^nd number: 2 8/16

21/7 + 40/16 is 11/2.

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 16 is 112

Next, find the equivalent fraction of both fractional numbers with denominator 112
For the 1st fraction, since 7 × 16 = 112,
21/7 = 21 × 16/7 × 16 = 336/112
Likewise, for the 2nd fraction, since 16 × 7 = 112,
40/16 = 40 × 7/16 × 7 = 280/112
Add the two like fractions:
336/112 + 280/112 = 336 + 280/112 = 616/112
616/112 simplified gives 11/2
So, 21/7 + 40/16 = 11/2
In mixed form: 51/2

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