Subtract 90/45 from 70/84
1st number: 70/84, 2nd number: 2 0/45
70/84 - 90/45 is -7/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 45 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 45 × 28 = 1260,
90/45 = 90 × 28/45 × 28 = 2520/1260 - Subtract the two like fractions:
1050/1260 - 2520/1260 = 1050 - 2520/1260 = -1470/1260 - After reducing the fraction, the answer is -7/6
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