Subtract 4/70 from 42/80
42/80 - 4/70 is 131/280.
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,
42/80 = 42 × 7/80 × 7 = 294/560 - Likewise, for the 2nd fraction, since 70 × 8 = 560,
4/70 = 4 × 8/70 × 8 = 32/560 - Subtract the two like fractions:
294/560 - 32/560 = 294 - 32/560 = 262/560 - After reducing the fraction, the answer is 131/280
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