Subtract 20/90 from 70/75
70/75 - 20/90 is 32/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 90 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 75 × 6 = 450,
70/75 = 70 × 6/75 × 6 = 420/450 - Likewise, for the 2nd fraction, since 90 × 5 = 450,
20/90 = 20 × 5/90 × 5 = 100/450 - Subtract the two like fractions:
420/450 - 100/450 = 420 - 100/450 = 320/450 - After reducing the fraction, the answer is 32/45
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