Subtract 20/70 from 25/16, Solve 1 9/16

Subtract 20/70 from 25/16

1^st number: 1 9/16, 2^nd number: 20/70

25/16 - 20/70 is 143/112.

Find the least common denominator or LCM of the two denominators:
LCM of 16 and 70 is 560

Next, find the equivalent fraction of both fractional numbers with denominator 560
For the 1st fraction, since 16 × 35 = 560,
25/16 = 25 × 35/16 × 35 = 875/560
Likewise, for the 2nd fraction, since 70 × 8 = 560,
20/70 = 20 × 8/70 × 8 = 160/560
Subtract the two like fractions:
875/560 - 160/560 = 875 - 160/560 = 715/560
After reducing the fraction, the answer is 143/112
In mixed form: 131/112

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