Subtract 42/32 from 7/30, Solve 7/30

Subtract 42/32 from 7/30

1^st number: 7/30, 2^nd number: 1 10/32

7/30 - 42/32 is -259/240.

Find the least common denominator or LCM of the two denominators:
LCM of 30 and 32 is 480

Next, find the equivalent fraction of both fractional numbers with denominator 480
For the 1st fraction, since 30 × 16 = 480,
7/30 = 7 × 16/30 × 16 = 112/480
Likewise, for the 2nd fraction, since 32 × 15 = 480,
42/32 = 42 × 15/32 × 15 = 630/480
Subtract the two like fractions:
112/480 - 630/480 = 112 - 630/480 = -518/480
After reducing the fraction, the answer is -259/240

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