Subtract 70/63 from 40/30
1st number: 1 10/30, 2nd number: 1 7/63
40/30 - 70/63 is 2/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 63 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 30 × 21 = 630,
40/30 = 40 × 21/30 × 21 = 840/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
70/63 = 70 × 10/63 × 10 = 700/630 - Subtract the two like fractions:
840/630 - 700/630 = 840 - 700/630 = 140/630 - After reducing the fraction, the answer is 2/9
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