Subtract 20/70 from 72/4
1st number: 18 0/4, 2nd number: 20/70
72/4 - 20/70 is 124/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 4 × 35 = 140,
72/4 = 72 × 35/4 × 35 = 2520/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
20/70 = 20 × 2/70 × 2 = 40/140 - Subtract the two like fractions:
2520/140 - 40/140 = 2520 - 40/140 = 2480/140 - After reducing the fraction, the answer is 124/7
- In mixed form: 175/7
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