Subtract 72/80 from 16/70, Solve 16/70

Subtract 72/80 from 16/70

16/70 - 72/80 is -47/70.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 80 is 560

Next, find the equivalent fraction of both fractional numbers with denominator 560
For the 1st fraction, since 70 × 8 = 560,
16/70 = 16 × 8/70 × 8 = 128/560
Likewise, for the 2nd fraction, since 80 × 7 = 560,
72/80 = 72 × 7/80 × 7 = 504/560
Subtract the two like fractions:
128/560 - 504/560 = 128 - 504/560 = -376/560
After reducing the fraction, the answer is -47/70

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