Subtract 42/90 from 70/84
70/84 - 42/90 is 11/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 90 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 84 × 15 = 1260,
70/84 = 70 × 15/84 × 15 = 1050/1260 - Likewise, for the 2nd fraction, since 90 × 14 = 1260,
42/90 = 42 × 14/90 × 14 = 588/1260 - Subtract the two like fractions:
1050/1260 - 588/1260 = 1050 - 588/1260 = 462/1260 - After reducing the fraction, the answer is 11/30
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Related: 70/84-84/90