Add 9/5 and 21/72, Solve 1 4/5 + 21/72 as a fraction

Add 9/5 and 21/72

1^st number: 1 4/5, 2^nd number: 21/72

9/5 + 21/72 is 251/120.

Find the least common denominator or LCM of the two denominators:
LCM of 5 and 72 is 360

Next, find the equivalent fraction of both fractional numbers with denominator 360
For the 1st fraction, since 5 × 72 = 360,
9/5 = 9 × 72/5 × 72 = 648/360
Likewise, for the 2nd fraction, since 72 × 5 = 360,
21/72 = 21 × 5/72 × 5 = 105/360
Add the two like fractions:
648/360 + 105/360 = 648 + 105/360 = 753/360
753/360 simplified gives 251/120
So, 9/5 + 21/72 = 251/120
In mixed form: 211/120

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