Subtract 5/80 from 4/7, Solve 4/7

Subtract 5/80 from 4/7

4/7 - 5/80 is 57/112.

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 80 is 560

Next, find the equivalent fraction of both fractional numbers with denominator 560
For the 1st fraction, since 7 × 80 = 560,
4/7 = 4 × 80/7 × 80 = 320/560
Likewise, for the 2nd fraction, since 80 × 7 = 560,
5/80 = 5 × 7/80 × 7 = 35/560
Subtract the two like fractions:
320/560 - 35/560 = 320 - 35/560 = 285/560
After reducing the fraction, the answer is 57/112

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