Subtract 72/98 from 15/70
15/70 - 72/98 is -51/98.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 98 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 70 × 7 = 490,
15/70 = 15 × 7/70 × 7 = 105/490 - Likewise, for the 2nd fraction, since 98 × 5 = 490,
72/98 = 72 × 5/98 × 5 = 360/490 - Subtract the two like fractions:
105/490 - 360/490 = 105 - 360/490 = -255/490 - After reducing the fraction, the answer is -51/98
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