Add 84/21 and 80/49, Solve 4 0/21 + 1 31/49 as a fraction

Add 84/21 and 80/49

1^st number: 4 0/21, 2^nd number: 1 31/49

84/21 + 80/49 is 276/49.

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,
84/21 = 84 × 7/21 × 7 = 588/147
Likewise, for the 2nd fraction, since 49 × 3 = 147,
80/49 = 80 × 3/49 × 3 = 240/147
Add the two like fractions:
588/147 + 240/147 = 588 + 240/147 = 828/147
828/147 simplified gives 276/49
So, 84/21 + 80/49 = 276/49
In mixed form: 531/49

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