Add 36/80 and 30/21, Solve 36/80 + 1 9/21 as a fraction

Add 36/80 and 30/21

1^st number: 36/80, 2^nd number: 1 9/21

36/80 + 30/21 is 263/140.

Find the least common denominator or LCM of the two denominators:
LCM of 80 and 21 is 1680

Next, find the equivalent fraction of both fractional numbers with denominator 1680
For the 1st fraction, since 80 × 21 = 1680,
36/80 = 36 × 21/80 × 21 = 756/1680
Likewise, for the 2nd fraction, since 21 × 80 = 1680,
30/21 = 30 × 80/21 × 80 = 2400/1680
Add the two like fractions:
756/1680 + 2400/1680 = 756 + 2400/1680 = 3156/1680
3156/1680 simplified gives 263/140
So, 36/80 + 30/21 = 263/140
In mixed form: 1123/140

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