Subtract 64/70 from 48/90
48/90 - 64/70 is -8/21.
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,
48/90 = 48 × 7/90 × 7 = 336/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
64/70 = 64 × 9/70 × 9 = 576/630 - Subtract the two like fractions:
336/630 - 576/630 = 336 - 576/630 = -240/630 - After reducing the fraction, the answer is -8/21
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Related: 96/90-64/70