Subtract 45/30 from 42/70
1st number: 42/70, 2nd number: 1 15/30
42/70 - 45/30 is -9/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
42/70 = 42 × 3/70 × 3 = 126/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
45/30 = 45 × 7/30 × 7 = 315/210 - Subtract the two like fractions:
126/210 - 315/210 = 126 - 315/210 = -189/210 - After reducing the fraction, the answer is -9/10
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