Subtract 42/7 from 70/45
1st number: 1 25/45, 2nd number: 6 0/7
70/45 - 42/7 is -40/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 7 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 45 × 7 = 315,
70/45 = 70 × 7/45 × 7 = 490/315 - Likewise, for the 2nd fraction, since 7 × 45 = 315,
42/7 = 42 × 45/7 × 45 = 1890/315 - Subtract the two like fractions:
490/315 - 1890/315 = 490 - 1890/315 = -1400/315 - After reducing the fraction, the answer is -40/9
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