Subtract 42/70 from 4/9
4/9 - 42/70 is -7/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 9 × 70 = 630,
4/9 = 4 × 70/9 × 70 = 280/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
42/70 = 42 × 9/70 × 9 = 378/630 - Subtract the two like fractions:
280/630 - 378/630 = 280 - 378/630 = -98/630 - After reducing the fraction, the answer is -7/45
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