Subtract 12/27 from 40/30, Solve 1 10/30

Subtract 12/27 from 40/30

1^st number: 1 10/30, 2^nd number: 12/27

40/30 - 12/27 is 8/9.

Find the least common denominator or LCM of the two denominators:
LCM of 30 and 27 is 270

Next, find the equivalent fraction of both fractional numbers with denominator 270
For the 1st fraction, since 30 × 9 = 270,
40/30 = 40 × 9/30 × 9 = 360/270
Likewise, for the 2nd fraction, since 27 × 10 = 270,
12/27 = 12 × 10/27 × 10 = 120/270
Subtract the two like fractions:
360/270 - 120/270 = 360 - 120/270 = 240/270
After reducing the fraction, the answer is 8/9

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