Subtract 21/30 from 70/75
70/75 - 21/30 is 7/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 30 is 150
Next, find the equivalent fraction of both fractional numbers with denominator 150 - For the 1st fraction, since 75 × 2 = 150,
70/75 = 70 × 2/75 × 2 = 140/150 - Likewise, for the 2nd fraction, since 30 × 5 = 150,
21/30 = 21 × 5/30 × 5 = 105/150 - Subtract the two like fractions:
140/150 - 105/150 = 140 - 105/150 = 35/150 - After reducing the fraction, the answer is 7/30
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