Subtract 42/64 from 45/70
45/70 - 42/64 is -3/224.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 64 is 2240
Next, find the equivalent fraction of both fractional numbers with denominator 2240 - For the 1st fraction, since 70 × 32 = 2240,
45/70 = 45 × 32/70 × 32 = 1440/2240 - Likewise, for the 2nd fraction, since 64 × 35 = 2240,
42/64 = 42 × 35/64 × 35 = 1470/2240 - Subtract the two like fractions:
1440/2240 - 1470/2240 = 1440 - 1470/2240 = -30/2240 - After reducing the fraction, the answer is -3/224
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