Subtract 70/35 from 45/90
1st number: 45/90, 2nd number: 2 0/35
45/90 - 70/35 is -3/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 35 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
45/90 = 45 × 7/90 × 7 = 315/630 - Likewise, for the 2nd fraction, since 35 × 18 = 630,
70/35 = 70 × 18/35 × 18 = 1260/630 - Subtract the two like fractions:
315/630 - 1260/630 = 315 - 1260/630 = -945/630 - After reducing the fraction, the answer is -3/2
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