Add 21/45 and 60/72
21/45 + 60/72 is 13/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 45 × 8 = 360,
21/45 = 21 × 8/45 × 8 = 168/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
60/72 = 60 × 5/72 × 5 = 300/360 - Add the two like fractions:
168/360 + 300/360 = 168 + 300/360 = 468/360 - 468/360 simplified gives 13/10
- So, 21/45 + 60/72 = 13/10
In mixed form: 13/10
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