Subtract 70/84 from 49/90
49/90 - 70/84 is -13/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 84 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 90 × 14 = 1260,
49/90 = 49 × 14/90 × 14 = 686/1260 - Likewise, for the 2nd fraction, since 84 × 15 = 1260,
70/84 = 70 × 15/84 × 15 = 1050/1260 - Subtract the two like fractions:
686/1260 - 1050/1260 = 686 - 1050/1260 = -364/1260 - After reducing the fraction, the answer is -13/45
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Related: 98/90-70/84