Subtract 21/49 from 70/45
1st number: 1 25/45, 2nd number: 21/49
70/45 - 21/49 is 71/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 49 is 2205
Next, find the equivalent fraction of both fractional numbers with denominator 2205 - For the 1st fraction, since 45 × 49 = 2205,
70/45 = 70 × 49/45 × 49 = 3430/2205 - Likewise, for the 2nd fraction, since 49 × 45 = 2205,
21/49 = 21 × 45/49 × 45 = 945/2205 - Subtract the two like fractions:
3430/2205 - 945/2205 = 3430 - 945/2205 = 2485/2205 - After reducing the fraction, the answer is 71/63
- In mixed form: 18/63
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