Subtract 2/70 from 42/80
42/80 - 2/70 is 139/280.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 70 is 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,
2/70 = 2 × 8/70 × 8 = 16/560 - Subtract the two fractions:
294/560 - 16/560 = 294 - 16/560 = 278/560 - After reducing the fraction, the answer is 139/280
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