Subtract 70/32 from 28/72, Solve 28/72

Subtract 70/32 from 28/72

1^st number: 28/72, 2^nd number: 2 6/32

28/72 - 70/32 is -259/144.

Find the least common denominator or LCM of the two denominators:
LCM of 72 and 32 is 288

Next, find the equivalent fraction of both fractional numbers with denominator 288
For the 1st fraction, since 72 × 4 = 288,
28/72 = 28 × 4/72 × 4 = 112/288
Likewise, for the 2nd fraction, since 32 × 9 = 288,
70/32 = 70 × 9/32 × 9 = 630/288
Subtract the two like fractions:
112/288 - 630/288 = 112 - 630/288 = -518/288
After reducing the fraction, the answer is -259/144

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