Subtract 8/5 from 90/72
1st number: 1 18/72, 2nd number: 1 3/5
90/72 - 8/5 is -7/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 5 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
90/72 = 90 × 5/72 × 5 = 450/360 - Likewise, for the 2nd fraction, since 5 × 72 = 360,
8/5 = 8 × 72/5 × 72 = 576/360 - Subtract the two like fractions:
450/360 - 576/360 = 450 - 576/360 = -126/360 - After reducing the fraction, the answer is -7/20
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