Add 42/21 and 7/8, Solve 2 0/21 + 7/8 as a fraction

Add 42/21 and 7/8

1^st number: 2 0/21, 2^nd number: 7/8

42/21 + 7/8 is 23/8.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 8 is 168

Next, find the equivalent fraction of both fractional numbers with denominator 168
For the 1st fraction, since 21 × 8 = 168,
42/21 = 42 × 8/21 × 8 = 336/168
Likewise, for the 2nd fraction, since 8 × 21 = 168,
7/8 = 7 × 21/8 × 21 = 147/168
Add the two like fractions:
336/168 + 147/168 = 336 + 147/168 = 483/168
483/168 simplified gives 23/8
So, 42/21 + 7/8 = 23/8
In mixed form: 27/8

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