Subtract 56/70 from 16/90
16/90 - 56/70 is -28/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
16/90 = 16 × 7/90 × 7 = 112/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
56/70 = 56 × 9/70 × 9 = 504/630 - Subtract the two like fractions:
112/630 - 504/630 = 112 - 504/630 = -392/630 - After reducing the fraction, the answer is -28/45
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