Subtract 7/70 from 28/36
28/36 - 7/70 is 61/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 70 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 36 × 35 = 1260,
28/36 = 28 × 35/36 × 35 = 980/1260 - Likewise, for the 2nd fraction, since 70 × 18 = 1260,
7/70 = 7 × 18/70 × 18 = 126/1260 - Subtract the two like fractions:
980/1260 - 126/1260 = 980 - 126/1260 = 854/1260 - After reducing the fraction, the answer is 61/90
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