Add 30/72 and 42/45
30/72 + 42/45 is 27/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 45 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
30/72 = 30 × 5/72 × 5 = 150/360 - Likewise, for the 2nd fraction, since 45 × 8 = 360,
42/45 = 42 × 8/45 × 8 = 336/360 - Add the two like fractions:
150/360 + 336/360 = 150 + 336/360 = 486/360 - 486/360 simplified gives 27/20
- So, 30/72 + 42/45 = 27/20
In mixed form: 17/20
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