Subtract 40/42 from 70/45
1st number: 1 25/45, 2nd number: 40/42
70/45 - 40/42 is 38/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 42 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 45 × 14 = 630,
70/45 = 70 × 14/45 × 14 = 980/630 - Likewise, for the 2nd fraction, since 42 × 15 = 630,
40/42 = 40 × 15/42 × 15 = 600/630 - Subtract the two like fractions:
980/630 - 600/630 = 980 - 600/630 = 380/630 - After reducing the fraction, the answer is 38/63
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