Subtract 20/45 from 70/72
70/72 - 20/45 is 19/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 45 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
70/72 = 70 × 5/72 × 5 = 350/360 - Likewise, for the 2nd fraction, since 45 × 8 = 360,
20/45 = 20 × 8/45 × 8 = 160/360 - Subtract the two like fractions:
350/360 - 160/360 = 350 - 160/360 = 190/360 - After reducing the fraction, the answer is 19/36
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