Subtract 49/32 from 42/30, Solve 1 12/30

Subtract 49/32 from 42/30

1^st number: 1 12/30, 2^nd number: 1 17/32

42/30 - 49/32 is -21/160.

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,
42/30 = 42 × 16/30 × 16 = 672/480
Likewise, for the 2nd fraction, since 32 × 15 = 480,
49/32 = 49 × 15/32 × 15 = 735/480
Subtract the two like fractions:
672/480 - 735/480 = 672 - 735/480 = -63/480
After reducing the fraction, the answer is -21/160

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