Add 28/21 and 28/49, Solve 1 7/21 + 28/49 as a fraction

Add 28/21 and 28/49

1^st number: 1 7/21, 2^nd number: 28/49

28/21 + 28/49 is 40/21.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 49 is 147

Next, find the equivalent fraction of both fractional numbers with denominator 147
For the 1st fraction, since 21 × 7 = 147,
28/21 = 28 × 7/21 × 7 = 196/147
Likewise, for the 2nd fraction, since 49 × 3 = 147,
28/49 = 28 × 3/49 × 3 = 84/147
Add the two like fractions:
196/147 + 84/147 = 196 + 84/147 = 280/147
280/147 simplified gives 40/21
So, 28/21 + 28/49 = 40/21
In mixed form: 119/21

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