Add 9/80 and 25/42, Solve 9/80 + 25/42 as a fraction

Add 9/80 and 25/42

9/80 + 25/42 is 1189/1680.

Find the least common denominator or LCM of the two denominators:
LCM of 80 and 42 is 1680

Next, find the equivalent fraction of both fractional numbers with denominator 1680
For the 1st fraction, since 80 × 21 = 1680,
9/80 = 9 × 21/80 × 21 = 189/1680
Likewise, for the 2nd fraction, since 42 × 40 = 1680,
25/42 = 25 × 40/42 × 40 = 1000/1680
Add the two like fractions:
189/1680 + 1000/1680 = 189 + 1000/1680 = 1189/1680
So, 9/80 + 25/42 = 1189/1680

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