Add 30/28 and 9/40, Solve 1 2/28 + 9/40 as a fraction

Add 30/28 and 9/40

1^st number: 1 2/28, 2^nd number: 9/40

30/28 + 9/40 is 363/280.

Find the least common denominator or LCM of the two denominators:
LCM of 28 and 40 is 280

Next, find the equivalent fraction of both fractional numbers with denominator 280
For the 1st fraction, since 28 × 10 = 280,
30/28 = 30 × 10/28 × 10 = 300/280
Likewise, for the 2nd fraction, since 40 × 7 = 280,
9/40 = 9 × 7/40 × 7 = 63/280
Add the two like fractions:
300/280 + 63/280 = 300 + 63/280 = 363/280
So, 30/28 + 9/40 = 363/280
In mixed form: 183/280

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