Subtract 30/40 from 1/45, Solve 1/45

Subtract 30/40 from 1/45

1/45 - 30/40 is -131/180.

Find the least common denominator or LCM of the two denominators:
LCM of 45 and 40 is 360

Next, find the equivalent fraction of both fractional numbers with denominator 360
For the 1st fraction, since 45 × 8 = 360,
1/45 = 1 × 8/45 × 8 = 8/360
Likewise, for the 2nd fraction, since 40 × 9 = 360,
30/40 = 30 × 9/40 × 9 = 270/360
Subtract the two like fractions:
8/360 - 270/360 = 8 - 270/360 = -262/360
After reducing the fraction, the answer is -131/180

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