Subtract 28/32 from 7/30
7/30 - 28/32 is -77/120.
Steps for subtracting fractions
- 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,
28/32 = 28 × 15/32 × 15 = 420/480 - Subtract the two like fractions:
112/480 - 420/480 = 112 - 420/480 = -308/480 - After reducing the fraction, the answer is -77/120
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