Subtract 50/70 from 28/80
28/80 - 50/70 is -51/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 70 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 80 × 7 = 560,
28/80 = 28 × 7/80 × 7 = 196/560 - Likewise, for the 2nd fraction, since 70 × 8 = 560,
50/70 = 50 × 8/70 × 8 = 400/560 - Subtract the two like fractions:
196/560 - 400/560 = 196 - 400/560 = -204/560 - After reducing the fraction, the answer is -51/140
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