Subtract 45/18 from 28/70
1st number: 28/70, 2nd number: 2 9/18
28/70 - 45/18 is -21/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 18 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
28/70 = 28 × 9/70 × 9 = 252/630 - Likewise, for the 2nd fraction, since 18 × 35 = 630,
45/18 = 45 × 35/18 × 35 = 1575/630 - Subtract the two like fractions:
252/630 - 1575/630 = 252 - 1575/630 = -1323/630 - After reducing the fraction, the answer is -21/10
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