Subtract 48/70 from 18/45
18/45 - 48/70 is -2/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 45 × 14 = 630,
18/45 = 18 × 14/45 × 14 = 252/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
48/70 = 48 × 9/70 × 9 = 432/630 - Subtract the two like fractions:
252/630 - 432/630 = 252 - 432/630 = -180/630 - After reducing the fraction, the answer is -2/7
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