Subtract 90/50 from 70/72
1st number: 70/72, 2nd number: 1 40/50
70/72 - 90/50 is -149/180.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 50 is 1800
Next, find the equivalent fraction of both fractional numbers with denominator 1800 - For the 1st fraction, since 72 × 25 = 1800,
70/72 = 70 × 25/72 × 25 = 1750/1800 - Likewise, for the 2nd fraction, since 50 × 36 = 1800,
90/50 = 90 × 36/50 × 36 = 3240/1800 - Subtract the two like fractions:
1750/1800 - 3240/1800 = 1750 - 3240/1800 = -1490/1800 - After reducing the fraction, the answer is -149/180
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